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 A135866 #2 Mar 30 2012 18:37:07
%S A135866 1,1,3,72,17055,37191123,731807102304,129633035920625844,
%T A135866 206676152816612330273175,2965575655806580962693168234624,
%U A135866 382974905786208201171725242242120141033
%N A135866 G.f. A(x) satisfies: A(x) = 1 + x*A(9x)^(1/3).
%o A135866 (PARI) {a(n)=local(A=1+x+x*O(x^n));for(i=0,n,A=1+x*subst(A,x,9*x)^(1/3));polcoeff(A,n)}
%Y A135866 Cf. A135863, A135864.
%K A135866 nonn
%O A135866 0,3
%A A135866 _Paul D. Hanna_, Dec 02 2007