G.f. satisfies: A(x) = Product_{n>=1} (1+x^n)*(1 + x^n*A(x))/((1-x^n)*(1 - x^n*A(x))).

A192624

G.f. satisfies: A(x) = Product_{n>=1} (1+x^n)*(1 + x^n*A(x))/((1-x^n)*(1 - x^n*A(x))).

Terms

    a(0) =1a(1) =4a(2) =20a(3) =112a(4) =676a(5) =4328a(6) =28912a(7) =199392a(8) =1409364a(9) =10157828a(10) =74375640a(11) =551715264a(12) =4137527408a(13) =31318286632a(14) =238958947328

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