G.f. A(x) equals an infinite symmetric composition of functions x/(1-x^n), n=1,2,3,...
A163135
G.f. A(x) equals an infinite symmetric composition of functions x/(1-x^n), n=1,2,3,...
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =69a(5) =245a(6) =885a(7) =3235a(8) =11923a(9) =44211a(10) =164694a(11) =615721a(12) =2308499a(13) =8675121a(14) =32661637a(15) =123161206a(16) =465018949a(17) =1757672820a(18) =6649722003a(19) =25177228890a(20) =95390000028a(21) =361616383623
External references
- oeis: A163135