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 A335758 #9 Jun 22 2020 13:20:45 %S A335758 7,15,84,85,42,190,490,442,854,358,1267,1170,1757,1667,1582,2220,3059, %T A335758 2885,3878,2640,4613,4523,5635,5489,5327,6357,7819,7554,9079,6252, %U A335758 10192,10032,11718,11474,11291,12734,14707,14400,16492,13749,18004,17690,19978,19650 %N A335758 a(n) is the number of vertices formed by n-secting the angles of a heptagon. %C A335758 See A335757 for illustrations. %H A335758 Lars Blomberg, <a href="/A335758/b335758.txt">Table of n, a(n) for n = 1..200</a> %Y A335758 Cf. A333113 (n-sected sides, not angles), A335757 (regions), A335759 (edges), A335760 (ngons). %K A335758 nonn %O A335758 1,1 %A A335758 _Lars Blomberg_, Jun 22 2020