This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A335526 #5 Jun 12 2020 09:22:59 %S A335526 4,5,32,29,96,69,192,169,324,285,492,409,696,629,936,865,1208,1117, %T A335526 1508,1429,1852,1757,2232,2089,2648,2521,3100,2961,3580,3425,4092, %U A335526 3949,4648,4477,5240,5029,5860,5665,6516,6325,7204,7001,7936,7737,8696,8473,9500 %N A335526 a(n) is the number of vertices formed by n-secting the angles of a square. %C A335526 See A278823 for illustrations. %Y A335526 Cf. A335411, A278823 (regions), A335527 (edges), A335528 (ngons). %K A335526 nonn %O A335526 1,1 %A A335526 _Lars Blomberg_, Jun 12 2020