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 A088946 #3 Mar 30 2012 18:36:39 %S A088946 1,1,1,1,4,13,86,466,3830,29633,289480,2865826,32992576,394893590, %T A088946 5267005771,73816682108,1123682376634,18021084739737,309127486471294, %U A088946 5578794711931042,106617559112195219 %N A088946 Coefficient of x^n of A(x)^n is A005651(n), which is the sum of multinomial coefficients for n. %Y A088946 Cf. A005651. %K A088946 nonn %O A088946 0,5 %A A088946 _Paul D. Hanna_, Oct 25 2003