Coefficient of x^n in expansion of (1 - n*x - n*x^2)^n.

A307911

Coefficient of x^n in expansion of (1 - n*x - n*x^2)^n.

Terms

    a(0) =1a(1) =-1a(2) =0a(3) =27a(4) =-416a(5) =5625a(6) =-74304a(7) =924385a(8) =-8626176a(9) =-48361131a(10) =7124800000a(11) =-340421390199

External references