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 A096900 #3 Mar 30 2012 17:29:16 %S A096900 1,7,2,31,10,3,22,127,38,4,58,27,82,16,5,511,142,32,178,19,6,52,262, %T A096900 123,310,76,362,7,418,59,478,2047,42,136,25,8,682,172,66,115,838,47, %U A096900 922,28,9,256,1102,507,1198,304,126,52,1402,356,10,103,162,412,1738,80,1858 %N A096900 a(n) = (A088558(n)-1)/2. %Y A096900 Cf. A088557, A088558, A096891-A096900. %K A096900 nonn %O A096900 1,2 %A A096900 _Ray Chandler_, Jul 14 2004