Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having index change +-(.,.) 0,0 0,1 or 2,-2.
A264084
Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having index change +-(.,.) 0,0 0,1 or 2,-2.
Terms
- a(0) =4a(1) =39a(2) =2401a(3) =645627a(4) =836655625
External references
- oeis: A264084