E.g.f. A(x) satisfies A( x/(exp(2*x)*cosh(2*x)) ) = exp(x)*cosh(x).

A218303

E.g.f. A(x) satisfies A( x/(exp(2*x)*cosh(2*x)) ) = exp(x)*cosh(x).

Terms

    a(0) =1a(1) =1a(2) =6a(3) =76a(4) =1480a(5) =39056a(6) =1303904a(7) =52716224a(8) =2504292480a(9) =136741146880

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