a(n) = Sum_{k = 0..n} n! * LaguerreL(n, -k).

A343849

a(n) = Sum_{k = 0..n} n! * LaguerreL(n, -k).

Terms

    a(0) =1a(1) =3a(2) =23a(3) =294a(4) =5194a(5) =116620a(6) =3175717a(7) =101696700a(8) =3745365444a(9) =155975005998

External references