G.f. A(x) equals an infinite symmetric composition of functions x+x^n, n=2,3,4,...

A163136

G.f. A(x) equals an infinite symmetric composition of functions x+x^n, n=2,3,4,...

Terms

    a(0) =1a(1) =2a(2) =4a(3) =13a(4) =41a(5) =133a(6) =457a(7) =1626a(8) =5983a(9) =22581a(10) =86273a(11) =332309a(12) =1289466a(13) =5037491a(14) =19814253a(15) =78464829a(16) =312698663a(17) =1253236364a(18) =5047142834a(19) =20408861265a(20) =82804575274a(21) =336913925731

External references