a(n) = n! * [x^n] exp(x*(1 + n*exp(x))).

A389833

a(n) = n! * [x^n] exp(x*(1 + n*exp(x))).

Terms

    a(0) =1a(1) =2a(2) =13a(3) =145a(4) =2273a(5) =45901a(6) =1133965a(7) =33125275a(8) =1116892929a(9) =42689123497

External references