a(n) = n! * [x^n] (-2 - exp(-x))^n.

A375542

a(n) = n! * [x^n] (-2 - exp(-x))^n.

Terms

    a(0) =1a(1) =1a(2) =8a(3) =87a(4) =1320a(5) =25725a(6) =612108a(7) =17203851a(8) =557748432a(9) =20489112729a(10) =841113462420

External references