4037914domain: NAppears in sequencesLeft factorials: !n = Sum_{k=0..n-1} k!.at n=11A003422Integral of exp(-x)*Phi_n(x) from 0 to infinity, Phi_n the n-th cyclotomic polynomial.at n=10A182103Left factorial !p, where p = prime(n).at n=4A236399Triangle read by rows: T(n, k) = Sum_{j=0..n} j! * binomial(n - j, n - k).at n=65A361042