E.g.f.: A(x) = Product_{n>=1} (1 + 4*x^n/n)^n.
A182967
E.g.f.: A(x) = Product_{n>=1} (1 + 4*x^n/n)^n.
Terms
- a(0) =1a(1) =4a(2) =8a(3) =120a(4) =576a(5) =6240a(6) =75840a(7) =772800a(8) =11585280a(9) =163914240a(10) =2694558720a(11) =45947489280a(12) =876665180160
External references
- oeis: A182967