G.f.: Sum_{n>=0} x^n / [Sum_{k>=0} C(n+k-1,k)^2*(-x)^k]^n.
A184355
G.f.: Sum_{n>=0} x^n / [Sum_{k>=0} C(n+k-1,k)^2*(-x)^k]^n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =9a(4) =58a(5) =515a(6) =6117a(7) =89015a(8) =1582412a(9) =33346657a(10) =816759195a(11) =22980062928a(12) =733407740393
External references
- oeis: A184355