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 A365163 #13 Aug 24 2023 07:05:15 %S A365163 6,0,7,4,3,7,2,3,4,7,6,4,5,8,1,3,6,8,6,6,6,0,7,5,6,6,5,9,8,7,7,0,2,2, %T A365163 5,6,4,5,3,9,8,7,0,1,8,9,0,2,4,4,3,8,2,7,0,2,2,3,6,6,2,2,4,9,4,5,0,8, %U A365163 4,5,5,2,3,1,4,4,7,7,7,9,0,1,2,9,0,9,7,6,3,0,4,8 %N A365163 Length of the perimeter of the regular heptagon with unit circumradius. %F A365163 Equals 7*A272487. %e A365163 6.0743723476458136866607566598... %t A365163 f[R_, s_] := 2*R*s*Sin[Pi/s]; a[n_] := RealDigits[f[1, 7], 10, n][[1]]; a[92] (* _Robert P. P. McKone_, Aug 24 2023 *) %Y A365163 Cf. A019845 (5-gon), A010487 (4-gon), A365164 (8-gon), A365165 (9-gon), A272487 (edge length), A104957 (area). %K A365163 nonn,cons %O A365163 1,1 %A A365163 _R. J. Mathar_, Aug 24 2023