Nonzero coefficients of g.f.: A(x) = G(G(G(x))) where G(x) = x + G(G(x))^3 is the g.f. of A153851.
A153853
Nonzero coefficients of g.f.: A(x) = G(G(G(x))) where G(x) = x + G(G(x))^3 is the g.f. of A153851.
Terms
- a(0) =1a(1) =3a(2) =27a(3) =339a(4) =5067a(5) =84738a(6) =1536867a(7) =29687772a(8) =603835479a(9) =12831704772a(10) =283320533673
External references
- oeis: A153853