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 A120185 #2 Mar 30 2012 18:34:45 %S A120185 9,10,12,14,16,19,22,26,30,35,41,48,56,65,76,89,103,121,141,164,192, %T A120185 224,261,304,355,414,483,564,658,767,895,1044,1218,1421,1658,1935, %U A120185 2257,2633,3072,3584 %N A120185 a(1)=9; a(n)=floor((55+sum(a(1) to a(n-1)))/6). %Y A120185 Cf. A073941, A112088, A072493. %K A120185 nonn %O A120185 1,1 %A A120185 _Graeme McRae_, Jun 10 2006