Coefficient of x^n in expansion of (1+n*x+n*x^2)^n.
A092366
Coefficient of x^n in expansion of (1+n*x+n*x^2)^n.
Terms
- a(0) =1a(1) =1a(2) =8a(3) =81a(4) =1120a(5) =19375a(6) =400896a(7) =9630411a(8) =262955008a(9) =8032730715a(10) =271175200000
External references
- oeis: A092366