E.g.f. satisfies: A(x) = 1 + x*exp(2*Integral A(x) dx).

A143920

E.g.f. satisfies: A(x) = 1 + x*exp(2*Integral A(x) dx).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =18a(4) =112a(5) =880a(6) =8256a(7) =90384a(8) =1131264a(9) =15927552a(10) =249164800a(11) =4287669760a(12) =80490393600

External references