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 A205774 #5 Mar 30 2012 18:37:34 %S A205774 1,1,5,27,177,1245,9399,73659,595510,4923724,41451675,354071010, %T A205774 3061018302,26732084764,235476740731,2089770720125,18666863392846, %U A205774 167697751329817,1514206777182411,13734387733516323,125083419013852945,1143367086845429280 %N A205774 G.f. satisfies: A(x) = 1/Product_{n>=1} (1 - x^n*A(x^n)^3). %e A205774 G.f.: A(x) = 1 + x + 5*x^2 + 27*x^3 + 177*x^4 + 1245*x^5 +... %e A205774 where %e A205774 A(x) = 1/((1 - x*A(x)^3) * (1 - x^2*A(x^2)^3) * (1 - x^3*A(x^3)^3) *...). %o A205774 (PARI) {a(n)=local(A=1+x); for(i=1, n, A=1/prod(k=1, n, (1-x^k*subst(A, x, x^k+x*O(x^n))^3))); polcoeff(A, n)} %Y A205774 Cf. A050383, A196192, A205775, A196191. %K A205774 nonn %O A205774 0,3 %A A205774 _Paul D. Hanna_, Jan 31 2012