G.f. satisfies: A(x) = 1/Product_{n>=1} (1 - 3*x^n*A(x^n)).
A205773
G.f. satisfies: A(x) = 1/Product_{n>=1} (1 - 3*x^n*A(x^n)).
Terms
- a(0) =1a(1) =3a(2) =21a(3) =156a(4) =1335a(5) =12153a(6) =116778a(7) =1160715a(8) =11848530a(9) =123420648a(10) =1306709841a(11) =14019657771a(12) =152092615971
External references
- oeis: A205773