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 A120182 #2 Mar 30 2012 18:34:45 %S A120182 5,6,7,8,10,11,13,15,18,21,24,28,33,38,45,52,61,71,83,97,113,132,154, %T A120182 179,209,244,285,332,388,452,528,616,718,838,978,1141,1331,1553,1811, %U A120182 2113 %N A120182 a(1)=5; a(n)=floor((34+sum(a(1) to a(n-1)))/6). %Y A120182 Cf. A073941, A112088, A072493. %K A120182 nonn %O A120182 1,1 %A A120182 _Graeme McRae_, Jun 10 2006