G.f. A(x) satisfies A(x) = 1/( 1 - 9*x*(1 + x)*A(x) )^(1/3).
A372087
G.f. A(x) satisfies A(x) = 1/( 1 - 9*x*(1 + x)*A(x) )^(1/3).
Terms
- a(0) =1a(1) =3a(2) =30a(3) =369a(4) =5130a(5) =76626a(6) =1200816a(7) =19475829a(8) =324140886a(9) =5504511654a(10) =94998663000
External references
- oeis: A372087