362871domain: NAppears in sequencesa(n) = n! - n.at n=9A005096Triangle T(n, k) = n*( (n-1)! - (k-1)! ), read by rows.at n=36A137259Triangle T(n, k) = n*( (n-1)! - (k-1)! ), read by rows.at n=37A137259Largest number k such that (k!+n!)/(k+n) is an integer.at n=7A242747