40945domain: NAppears in sequencesA007318 * [1, 2, 2, 3, 2, 3, 2, 3, 2, ...].at n=14A133124A007318^(-5) * A001286, 5th inverse binomial transform of the Lah numbers.at n=7A135218Numbers k such that k!6 + 4 is prime, where k!6 is the sextuple factorial number (A085158 ).at n=43A287914