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 A145168 #2 Mar 30 2012 18:37:15
%S A145168 1,2,15,226,4959,136338,4361818,155947386,6080986701,254568183028,
%T A145168 11318103523886,530301559146450,26035289254487166,1333502730683975402,
%U A145168 71012366873757289557,3921010145962481940986,223985973308662486807733
%N A145168 G.f. A(x) satisfies A(x/A(x)^3) = 1/(1-x)^2.
%F A145168 Self-convolution square of A145167.
%F A145168 Self-convolution cube yields A145170.
%o A145168 (PARI) {a(n)=local(A=1+x+x*O(x^n),B);for(n=0,n,B=serreverse(x/A^3);A=1/(1-B)^2);polcoeff(A,n)}
%Y A145168 Cf. A145167, A145169, A145170 (A^3).
%K A145168 nonn
%O A145168 0,2
%A A145168 _Paul D. Hanna_, Oct 03 2008