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 A179422 #4 Dec 31 2012 17:14:01
%S A179422 1,4,36,528,11000,301680,10379376,433371008,21434318496,1232928216000,
%T A179422 81297809313600,6074187611551488,509351655073262976,
%U A179422 47554889211476564736,4909859201019880800000,557309205260654645145600
%N A179422 E.g.f.: A(x) = G(G(x)) = x*G'(x) where G(x) is the g.f. of A179420.
%H A179422 Paul D. Hanna, <a href="/A179422/b179422.txt">Table of n, a(n) for n = 1..150</a>
%F A179422 a(n) = n*A179420(n) = n^2*A179421(n-1).
%F A179422 E.g.f. satisfies: x*A'(x)/A(x) = G(A(x))/G(x) where G(x) is the g.f. of A179420.
%e A179422 E.g.f.: A(x) = x + 4*x^2/2! + 36*x^3/3! + 528*x^4/4! + 11000*x^5/5! +...
%e A179422 Let G(x) be the g.f. of A179420, then
%e A179422 . G(x) = x + 2*x^2/2! + 12*x^3/3! + 132*x^4/4! + 2200*x^5/5! +...
%e A179422 . G(G(x)) = x + 4*x^2/2! + 36*x^3/3! + 528*x^4/4! + 11000*x^5/5! + ...
%o A179422 (PARI) {a(n)=local(A=x+x^2+sum(m=3,n-1,a(m)*x^m/(m*m!))+x*O(x^n));if(n<3,n!*polcoeff(A,n),n*n!*polcoeff(subst(A,x,A),n)/(n-2))}
%Y A179422 Cf. A179420, A179421.
%K A179422 nonn
%O A179422 1,2
%A A179422 _Paul D. Hanna_, Jul 28 2010