G.f. A(x) = Sum_{n>=0} A_n(x)^(n+1) where A_{n+1}(x) = A_n( A(x) ) with A_0(x)=x and A(0)=0.
A154757
G.f. A(x) = Sum_{n>=0} A_n(x)^(n+1) where A_{n+1}(x) = A_n( A(x) ) with A_0(x)=x and A(0)=0.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =14a(4) =83a(5) =574a(6) =4433a(7) =37274a(8) =335751a(9) =3204616a(10) =32159272a(11) =337383121a(12) =3684215369a(13) =41735965645a(14) =489173496890
External references
- oeis: A154757