70129domain: NAppears in sequencesNumber of permutations that are 2 "block reversals" away from 12...n.at n=23A007972Decimal part of a(n)^(1/5) starts with a 'nine digits' anagram.at n=32A034280Number of (w,x,y,z) with all terms in {1,...,n} and |x-y|>=|y-z|.at n=19A212682