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 A067158 #18 Dec 04 2021 12:27:33 %S A067158 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, %T A067158 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,71,0,0,0,0,0,0,0, %U A067158 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,99,0,0,102,103,0,0,0,0,108,0 %N A067158 Number of regions in regular n-gon which are 11-gons. %D A067158 B. Poonen and M. Rubinstein, Number of Intersection Points Made by the Diagonals of a Regular Polygon, SIAM J. Discrete Mathematics, Vol. 11, pp. 135-156. %H A067158 Scott R. Shannon, <a href="/A067158/b067158.txt">Table of n, a(n) for n = 11..765</a> %H A067158 Sascha Kurz, <a href="http://www.mathe2.uni-bayreuth.de/sascha/oeis/drawing/drawing.html">m-gons in regular n-gons</a> %H A067158 B. Poonen and M. Rubinstein, <a href="http://math.mit.edu/~poonen/">The number of intersection points made by the diagonals of a regular polygon</a>, SIAM J. on Discrete Mathematics, Vol. 11, No. 1, 135-156 (1998). %H A067158 <a href="/index/Pol#Poonen">Sequences formed by drawing all diagonals in regular polygon</a> %e A067158 a(11)=1 because drawing the regular 11-gon with all its diagonals yields 1 11-gon. %Y A067158 Cf. A007678, A064869, A067151, A067152, A067153, A067154, A067155, A067156, A067157, A067159. %K A067158 nonn %O A067158 11,19 %A A067158 _Sascha Kurz_, Jan 06 2002 %E A067158 a(110) and beyond by _Scott R. Shannon_, Dec 04 2021