7644038domain: NAppears in sequencesNumber of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.at n=6A264653Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.at n=5A264654