188020096domain: NAppears in sequencesNumber of (n+1)X(4+1) arrays of permutations of 0..n*4-1 with each element moved a city block distance of exactly 2.at n=3A263388T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..n*k-1 with each element moved a city block distance of exactly 2.at n=24A263389