G.f.: A(x) = Sum_{n>=0} x^n/[Sum_{k=0..n} C(n,k)^3*(-x)^k].
A181136
G.f.: A(x) = Sum_{n>=0} x^n/[Sum_{k=0..n} C(n,k)^3*(-x)^k].
Terms
- a(0) =1a(1) =1a(2) =2a(3) =10a(4) =92a(5) =1264a(6) =26138a(7) =753322a(8) =28451978a(9) =1385043022a(10) =84971475986
External references
- oeis: A181136