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

A218305

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

Terms

    a(0) =1a(1) =1a(2) =8a(3) =148a(4) =4256a(5) =166816a(6) =8297600a(7) =500730112a(8) =35547379712

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