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 A236180 #12 Mar 10 2014 17:34:43 %S A236180 90,22,6,20,15,7,15,21,21,7,23,17,6,22,15,21,29,17,6,17,7,13,55,15,21, %T A236180 8,37,8,23,23,14,24,21,8,39,6,16,6,46,46,14,7,14,22,9,39,24,21,24,8, %U A236180 23,13,8,39,54,14,7,14,55,22,38,7,15,24,28,22,25,14,22 %N A236180 Prime gap pattern of compacting Eratosthenes sieve for prime(9) = 23. %C A236180 See A236175 for details. %H A236180 Christopher J. Hanson, <a href="/A236180/b236180.txt">Table of n, a(n) for n = 1..10000</a> %Y A236180 Cf. A236175-A236180, A236185-A236190. %K A236180 nonn %O A236180 1,1 %A A236180 _Christopher J. Hanson_, Jan 19 2014