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

A294045

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

Terms

    a(0) =1a(1) =1a(2) =6a(3) =87a(4) =2248a(5) =88245a(6) =4834296a(7) =349799527a(8) =32139501696

External references