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 A332428 #17 May 16 2020 06:56:36 %S A332428 135,2395,16434,53155,141147,293374,565767,966493,1580940,2411533, %T A332428 3581613,5070655,7057026,9493435,12594564,16307974,20902338,26269597, %U A332428 32760774,40217905,49049919,59090671,70803180 %N A332428 The number of vertices on a nonagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. %C A332428 See the links in A332421 for images of the nonagons. %Y A332428 Cf. A332421 (regions), A332427 (n-gons), A332429 (edges), A330846, A092866, A332599, A007569. %K A332428 nonn,more %O A332428 1,1 %A A332428 _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 09 2020 %E A332428 a(6)-a(23) from _Lars Blomberg_, May 16 2020