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 A332419 #16 May 18 2020 05:15:57 %S A332419 390,7800,48870,164470,430840,900890,1735800,2982660,4849740,7438490, %T A332419 11017860,15596420,21713060,29254830,38714410,50238450,64311090, %U A332419 80839300,100786890,123786030,150835530 %N A332419 The number of edges on a decagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. %C A332419 See the links in A333139 for images of the decagons. %Y A332419 Cf. A333139 (regions), A332417 (n-gons), A332418 (vertices), A330845, A274586, A332600, A331765. %K A332419 nonn,more %O A332419 1,1 %A A332419 _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 09 2020 %E A332419 a(6)-a(21) from _Lars Blomberg_, May 18 2020