791859600domain: NAppears in sequencesNumber of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,-2 or 2,-1.at n=6A264124Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having index change +-(.,.) 0,0 1,-2 or 2,-1.at n=3A264127