326946domain: NAppears in sequencesNumbers m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,55.at n=31A065696a(n) = ceiling(1/(e - 1/0! - 1/1! - 1/2! - ... - 1/n!)).at n=8A323274