3623076864domain: NAppears in sequencesNumber of (n+1)X(3+1) arrays of permutations of 0..n*3-1 with each element moved a city block distance of exactly 2.at n=5A263387T(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=30A263389