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

A219231

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

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =47a(6) =160a(7) =554a(8) =1987a(9) =7243a(10) =26873a(11) =100930a(12) =383412a(13) =1469673a(14) =5679033a(15) =22095308a(16) =86489211a(17) =340360513a(18) =1345814572a(19) =5344184197a(20) =21303295069a(21) =85216434084a(22) =341960332173

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