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 A057990 #3 Mar 30 2012 18:57:04 %S A057990 10,15,24,40,53,63,68,81,91,103,108,117,130,140,152,157,173,178,187, %T A057990 203,216,226,238,243,259,264,273,286,296,301,310,326,339,349,354,367, %U A057990 377,389,394,410,415,424,437,447,452,461,477,490 %N A057990 Positions of 00 in A057985. %K A057990 nonn %O A057990 1,1 %A A057990 _Clark Kimberling_, Oct 30 2000