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 A263419 #7 Nov 25 2015 03:05:53 %S A263419 1,6,11,26,51,106,201,396,751,1446,2741 %N A263419 a(n) is the total number of pentagrams in a variant of pentagram fractal after n iterations. %C A263419 Inspired by A255870, also same as A263418 but overlaps are prohibited. %H A263419 Kival Ngaokrajang, <a href="/A263419/a263419.pdf">Illustration of initial terms</a> %Y A263419 Cf. A255870, A256429, A256569, A256571, A256582, A256583, A263418. %K A263419 nonn,more %O A263419 0,2 %A A263419 _Kival Ngaokrajang_, Oct 17 2015