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

A381387

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

Terms

    a(0) =1a(1) =2a(2) =14a(3) =182a(4) =3520a(5) =91002a(6) =2954400a(7) =115638014a(8) =5303063552a(9) =278979672050

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