L.g.f.: G(x) = exp( Sum_{n>=1} a(n)*x^n/n ) where G(x) = exp( Sum_{n>=1} G(a(n)*x^n)*x^n/n ).

A179491

L.g.f.: G(x) = exp( Sum_{n>=1} a(n)*x^n/n ) where G(x) = exp( Sum_{n>=1} G(a(n)*x^n)*x^n/n ).

Terms

    a(0) =1a(1) =3a(2) =7a(3) =23a(4) =51a(5) =201a(6) =442a(7) =1663a(8) =4156a(9) =15083a(10) =35564a(11) =139961a(12) =329694a(13) =1244834a(14) =3162552a(15) =11494207a(16) =28340038a(17) =108476634a(18) =266695553a(19) =992977283a(20) =2544862201a(21) =9319498334a(22) =23550935216a(23) =87424092169a(24) =222620040051a(25) =819109845024

External references