100490domain: NAppears in sequencesNumber of permutations of [n] with four inversions.at n=35A005287Number of reduced words of length n in the Weyl group A_38.at n=4A161651Index of 2^n in A351495.at n=17A361334Numbers k such that k, k+1 and k+2 have exactly 4 distinct prime factors.at n=34A364309