E.g.f. satisfies: A(x) = exp( 2*x*Catalan(x*A(x)) ), where Catalan(x) = (1-sqrt(1-4*x))/(2*x) is the g.f. of A000108.

A214689

E.g.f. satisfies: A(x) = exp( 2*x*Catalan(x*A(x)) ), where Catalan(x) = (1-sqrt(1-4*x))/(2*x) is the g.f. of A000108.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =80a(4) =1360a(5) =32352a(6) =989824a(7) =37019264a(8) =1636370432a(9) =83464921088

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