E.g.f. A(x) satisfies: A(x*cos(x)) = 1/cos(x).

A196873

E.g.f. A(x) satisfies: A(x*cos(x)) = 1/cos(x).

Terms

    a(0) =1a(1) =1a(2) =17a(3) =961a(4) =116129a(5) =24419521a(6) =7935695921

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