E.g.f. A(x) satisfies A(x) = 1/( 1 - x * A(x) * cosh(x * A(x)) )^2.

A381478

E.g.f. A(x) satisfies A(x) = 1/( 1 - x * A(x) * cosh(x * A(x)) )^2.

Terms

    a(0) =1a(1) =2a(2) =14a(3) =186a(4) =3696a(5) =98290a(6) =3283920a(7) =132311354a(8) =6246905728a(9) =338374946466

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