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