OEIS Parity Triangles
@oeistriangles.peterkagey.com
A bot by @peterkagey.com that posts a Parity Triangle from the OEIS every day.
See my blog post for more details: https://peterkagey.com/blog/2021/03/parity-bitmaps-from-the-oeis/
See my blog post for more details: https://peterkagey.com/blog/2021/03/parity-bitmaps-from-the-oeis/
OEIS sequence A174102 by Roger L. Bagula (March 2010).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 26, 2025 at 4:20 PM
OEIS sequence A174102 by Roger L. Bagula (March 2010).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A302998 by Ilya Gutkovskiy (April 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 25, 2025 at 4:50 PM
OEIS sequence A302998 by Ilya Gutkovskiy (April 2018).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
As a Christmas gift to the World Wide Web, I've queued up 2065 new triangles to get us through the next five years and beyond!
December 24, 2025 at 8:50 PM
As a Christmas gift to the World Wide Web, I've queued up 2065 new triangles to get us through the next five years and beyond!
OEIS sequence A054532 by N. J. A. Sloane (April 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 24, 2025 at 12:00 PM
OEIS sequence A054532 by N. J. A. Sloane (April 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A075196 by Christian G. Bower (September 2002).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 22, 2025 at 12:58 PM
OEIS sequence A075196 by Christian G. Bower (September 2002).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A080080 by Reinhard Zumkeller (January 2003).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 20, 2025 at 1:56 PM
OEIS sequence A080080 by Reinhard Zumkeller (January 2003).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A106351 by Christian G. Bower (April 2005).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 19, 2025 at 2:25 PM
OEIS sequence A106351 by Christian G. Bower (April 2005).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A091355 by Christian G. Bower (January 2004).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 16, 2025 at 3:52 PM
OEIS sequence A091355 by Christian G. Bower (January 2004).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A064315 by David W. Wilson (September 2001).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 14, 2025 at 4:50 PM
OEIS sequence A064315 by David W. Wilson (September 2001).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A103284 by Paul D. Hanna (January 2005).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 9, 2025 at 7:15 PM
OEIS sequence A103284 by Paul D. Hanna (January 2005).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A080098 by Reinhard Zumkeller (January 2003).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 8, 2025 at 7:44 PM
OEIS sequence A080098 by Reinhard Zumkeller (January 2003).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A058399 by Wolfdieter Lang (December 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 6, 2025 at 8:42 PM
OEIS sequence A058399 by Wolfdieter Lang (December 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A053633 by N. J. A. Sloane (March 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 5, 2025 at 9:11 PM
OEIS sequence A053633 by N. J. A. Sloane (March 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
OEIS sequence A054527 by N. J. A. Sloane (April 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
December 3, 2025 at 10:09 PM
OEIS sequence A054527 by N. J. A. Sloane (April 2000).
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)
(Even terms are drawn as dark hexagons and odd terms are drawn as light hexagons.)