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 A333112 #10 May 14 2020 04:24:03 %S A333112 91,1575,10962,35812,96257,201054,389991,668458,1096508,1675835, %T A333112 2494989,3536876,4930408,6639913,8816458,11425631,14659085,18433975, %U A333112 23007579,28257418,34478871,41557817,49822388,59079475,69756253,81641812,95165210 %N A333112 The number of edges inside a heptagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. %C A333112 See the links in A329713 for images of the heptagons. %Y A333112 Cf. A329713 (regions), A329714 (n-gons), A333113 (vertices), A330845, A274586 , A332600, A331765. %K A333112 nonn,more %O A333112 1,1 %A A333112 _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 07 2020 %E A333112 a(8)-a(27) from _Lars Blomberg_, May 13 2020