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 A088263 #4 Dec 05 2013 19:56:33 %S A088263 11,13,37,79,911,1213,2417,1619,2521,1823,3727,3329,2731,3833,4637, %T A088263 4339,5741,5843,5347,6949,5651,6353,5657,7459,8461,8363,8467,9769, %U A088263 10771,9173,10177,10979,11681,11483,11087,11789,12391,13093,12697,13499,182101 %N A088263 Diagonal of A088262. %Y A088263 Cf. A088262. %K A088263 base,nonn %O A088263 1,1 %A A088263 _Amarnath Murthy_, Sep 28 2003 %E A088263 More terms from _David Wasserman_, Jul 27 2005