G.f. = 1/(1-g(x)) where g(x) is the g.f. for A141309.
A185161
G.f. = 1/(1-g(x)) where g(x) is the g.f. for A141309.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =36a(4) =283a(5) =2898a(6) =36169a(7) =524976a(8) =8659186a(9) =159736316a(10) =3257811334a(11) =72797444280
External references
- oeis: A185161