G.f. satisfies: A(x) = -1 + x + A(x)^3 + 1/A(x)^3.
A228713
G.f. satisfies: A(x) = -1 + x + A(x)^3 + 1/A(x)^3.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =153a(4) =3255a(5) =77577a(6) =1981126a(7) =53004150a(8) =1466474670a(9) =41614008260
External references
- oeis: A228713