E.g.f.: Product_{n>=1} B(x^n) where B(x) = exp(exp(x)-1) = e.g.f. of Bell numbers.

A209903

E.g.f.: Product_{n>=1} B(x^n) where B(x) = exp(exp(x)-1) = e.g.f. of Bell numbers.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =17a(4) =111a(5) =752a(6) =6893a(7) =64171a(8) =733540a(9) =8751579a(10) =119847295a(11) =1716294780a(12) =27583937857a(13) =460405876777

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