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 A112233 #3 Mar 30 2012 18:50:53 %S A112233 2,4,5,7,7,9,11,11,13,15,15,17,18,20,21,22,24,25,26,28,29,31,32,33,34, %T A112233 36,37,38,40,42,43,44,45,47,48,50,52,53,54,55,57,57,59,60,62,63,65,67, %U A112233 67,69,71,72,74,74,76,77,78,79,81,82,84,85,86,88,89,91,92,94,95,96,98 %N A112233 A112231(n) + A112232(n). %Y A112233 Cf. A112234, A112235. %K A112233 nonn %O A112233 1,1 %A A112233 _Reinhard Zumkeller_, Aug 29 2005