16552783250domain: NAppears in sequencesNumber of (n+1) X (7+1) arrays of permutations of 0..n*8+7 with each element having index change +-(.,.) 0,0 0,1 or 2,-2.at n=3A264089Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,1 or 2,-2.at n=6A264093