ClearAll[Lah]
Lah[n_?Positive, 0] := 0
Lah[0, k_?Positive] := 0
Lah[n_, n_] := 1
Lah[n_, 1] := n!
Lah[n_, k_] := (-1)^n (n! ((n - 1)!))/((k! ((k - 1)!)) ((n - k)!))
Table[Lah[i, j], {i, 0, 12}, {j, 0, 12}] // Grid
Max[Lah[100, Range[0, 100]]]