Expansion of log(1+tan(x)*sinh(x)).

A009378

Expansion of log(1+tan(x)*sinh(x)).

Terms

    a(0) =0a(1) =2a(2) =0a(3) =22a(4) =280a(5) =5402a(6) =515460a(7) =11703382a(8) =2688141040a(9) =146635350962

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