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 A088794 #3 Mar 30 2012 18:36:39 %S A088794 1,1,1,4,30,305,3905,59828,1063728,21497921,486476766,12184618776, %T A088794 334684804952,10005219881472,323438539163521,11244331792094312, %U A088794 418375698771595037,16590419690069321454,698526596162530976512 %N A088794 Coefficient of x^n in A(x)^(2n) is A004123(n); self-convolution is A088222. %Y A088794 Cf. A088222, A004123. %K A088794 nonn %O A088794 0,4 %A A088794 _Paul D. Hanna_, Oct 23 2003