a(n) = n! [x^n] -exp(-1/(3*(x - 1)^3) - 1/3)/(x - 1).

A322943

a(n) = n! [x^n] -exp(-1/(3*(x - 1)^3) - 1/3)/(x - 1).

Terms

    a(0) =1a(1) =2a(2) =9a(3) =60a(4) =513a(5) =5286a(6) =63417a(7) =865824a(8) =13229505a(9) =223336458a(10) =4123226601a(11) =82559530692

External references