G.f. A(x) satisfies: A(x) = 1 + x * A(x/(1 - 4*x)) / (1 - 4*x)^2.
A351810
G.f. A(x) satisfies: A(x) = 1 + x * A(x/(1 - 4*x)) / (1 - 4*x)^2.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =69a(4) =565a(5) =5305a(6) =56929a(7) =680685a(8) =8902349a(9) =126121313a(10) =1923133433a(11) =31379181461a(12) =544931376229
External references
- oeis: A351810