Number of n X n array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.
A189643
Number of n X n array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.
Terms
- a(0) =1a(1) =9a(2) =263a(3) =107080a(4) =250758892
External references
- oeis: A189643