E.g.f. A(x) satisfies A(x) = (1 + (exp(x) - 1) * A(3*x)) / (1 - x).

A367831

E.g.f. A(x) satisfies A(x) = (1 + (exp(x) - 1) * A(3*x)) / (1 - x).

Terms

    a(0) =1a(1) =2a(2) =17a(3) =529a(4) =60191a(5) =24822701a(6) =36413854321

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