Number of nX3 arrays of permutations of 0..n*3-1 with each element moved a city block distance of 0 or 2.
A263421
Number of nX3 arrays of permutations of 0..n*3-1 with each element moved a city block distance of 0 or 2.
Terms
- a(0) =2a(1) =36a(2) =1272a(3) =26244a(4) =532620a(5) =11751184a(6) =256052940a(7) =5521233025a(8) =119493228528
External references
- oeis: A263421