Number of nX4 arrays of permutations of 0..n*4-1 with each element moved a city block distance of 0 or 2.
A263422
Number of nX4 arrays of permutations of 0..n*4-1 with each element moved a city block distance of 0 or 2.
Terms
- a(0) =4a(1) =196a(2) =26244a(3) =1993744a(4) =141086884a(5) =10808097444a(6) =831331827076
External references
- oeis: A263422