G.f. A(x) satisfies: A(x) = Sum_{n>=0} (n+1) * x^n / (1 - x^(n+1)*A(x)^n).

Terms

a(0) =1a(1) =3a(2) =4a(3) =7a(4) =12a(5) =20a(6) =52a(7) =124a(8) =297a(9) =802a(10) =2114a(11) =5705a(12) =15653a(13) =42392a(14) =116560a(15) =324503a(16) =907520a(17) =2556402a(18) =7223284a(19) =20471723a(20) =58319247a(21) =166859181a(22) =479305506a(23) =1381683897a(24) =3993923929a(25) =11574493329a(26) =33625052782a(27) =97908062011a(28) =285724318094a(29) =835602499442