E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(3*x)*cosh(3*x).

A218301

E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(3*x)*cosh(3*x).

Terms

    a(0) =1a(1) =3a(2) =24a(3) =252a(4) =3360a(5) =55008a(6) =1074816a(7) =24499968a(8) =639744000a(9) =18856765440a(10) =619897847808

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