Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having index change +-(.,.) 0,0 or 1,2.
A263988
Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having index change +-(.,.) 0,0 or 1,2.
Terms
- a(0) =1a(1) =4a(2) =64a(3) =1728a(4) =104976a(5) =21870000a(6) =12656250000
External references
- oeis: A263988