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 A057927 #1 May 16 2003 03:00:00 %S A057927 3,7,12,13,15,26,27,31,52,53,55,58,59,63,92,93,95,98,99,103,108,109, %T A057927 111,122,123,127,180,181,183,186,187,191,252,253,255,450,451,455,460, %U A057927 461,463,474,475,479,500,501,503,506,507,511,796,797,799,802,803,807 %N A057927 Sequence b(n) mentioned in A057926. %Y A057927 Cf. A057926, A057928. %K A057927 easy,nonn %O A057927 1,1 %A A057927 Larry Reeves (larryr(AT)acm.org), Oct 03 2000