G.f. satisfies A(x) = exp( Sum_{k>=1} A(x^k) * x^k/(k * (1 - x^k)^2) ).

A363547

G.f. satisfies A(x) = exp( Sum_{k>=1} A(x^k) * x^k/(k * (1 - x^k)^2) ).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =13a(4) =47a(5) =168a(6) =635a(7) =2420a(8) =9460a(9) =37445a(10) =150309a(11) =609568a(12) =2495710a(13) =10298332a(14) =42793974a(15) =178910161a(16) =752034697a(17) =3176346092a(18) =13473881397a(19) =57378127986a(20) =245205968960

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