E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(4*x)*cosh(4*x).

A218302

E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(4*x)*cosh(4*x).

Terms

    a(0) =1a(1) =4a(2) =40a(3) =496a(4) =7488a(5) =134784a(6) =2836736a(7) =68635648a(8) =1881948160a(9) =57777184768

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