E.g.f. A(x) satisfies A(x) = 1/sqrt( 1 - 2*x*exp(x)*A(x) ).

A380044

E.g.f. A(x) satisfies A(x) = 1/sqrt( 1 - 2*x*exp(x)*A(x) ).

Terms

    a(0) =1a(1) =1a(2) =7a(3) =81a(4) =1393a(5) =32025a(6) =924831a(7) =32208337a(8) =1314511297a(9) =61553580849

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