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 A064530 #11 Oct 19 2020 02:22:01 %S A064530 1,2,0,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0 %N A064530 Number of holes in n-th capital letter of English alphabet. %H A064530 <a href="/index/Ho#holes">Index entries for sequences related to holes in letters</a> %e A064530 A has one hole, B has two, etc. %Y A064530 Equals A064529 - 1. Cf. A064531, A064532, A208568. %K A064530 nonn,fini,full %O A064530 1,2 %A A064530 _N. J. A. Sloane_, Oct 07 2001