47472domain: NAppears in sequencesNumber of permutations (p1,...,pn) such that 1 <= |pk - k| <= 2 for all k.at n=19A033305Number of (odd and even) split numbers (A036382) below 2^n.at n=15A036389Number of permutations of [n] with no fixed points where the maximal displacement of an element equals two.at n=17A321048