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 A361659 #7 Apr 28 2023 16:22:21 %S A361659 0,1,3,4,7,17,19,34,92,115,187,616,631,1201,6067,4114,7711,35322, %T A361659 27595,59704,328833,190933,364723,2435778,1579882,2582059,21013768, %U A361659 9894292,18512791,377367013,69273667,134219794,1678410949,505301839,1339499035,14843799550 %N A361659 Number of strictly convex unit-sided polygons with all internal angles equal to a multiple of Pi/n, treating polygons that have a unique mirror image as distinct but ignoring rotational copies. %F A361659 a(n) = A164896(2*n) - 2. - _Andrew Howroyd_, Mar 22 2023 %Y A361659 Cf. A164896, A262181, A361635 (up to rotations and reflections). %K A361659 nonn %O A361659 1,3 %A A361659 _Roman Mecholsky_, Mar 19 2023 %E A361659 a(7) corrected and terms a(9) and beyond from _Andrew Howroyd_, Mar 22 2023