32867289domain: NAppears in sequencesNumber of subsets of the set {1,2,...,n} which do not contain two elements whose difference is 6.at n=33A208743Number of (n+1) X (3+1) arrays of permutations of 0..n*4+3 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.at n=8A264055