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 A089240 #5 Mar 30 2012 16:49:50 %S A089240 1,0,0,0,1,3,7,14,25,41,63,93,132,182,244,321,414,526,658,814 %N A089240 Column k=4 of triangle in A089239. %H A089240 N. J. A. Sloane and J. A. Sellers, <a href="http://arXiv.org/abs/math.CO/0312418">On non-squashing partitions</a>, Discrete Math., 294 (2005), 259-274. %K A089240 nonn %O A089240 0,6 %A A089240 _N. J. A. Sloane_, Dec 11 2003