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 A112063 #2 Mar 31 2012 14:02:21 %S A112063 11,12,23,36,47,48,71,72,83,96,107,108,131,132,143,156,167,168,191, %T A112063 192,203,216,227,228,251,252,263,276,287,288,311,312,323,336,347,348, %U A112063 371,372,383,396,407,408,431,432,443,456,467,468,491,492,503,516,527 %N A112063 Positive integers i for which A112049(i) == 3. %Y A112063 Row 3 of A112060. %K A112063 nonn %O A112063 1,1 %A A112063 _Antti Karttunen_, Aug 27 2005