Number of n X n array permutations with each element not moving, or moving one space N, SW or SE.
A189428
Number of n X n array permutations with each element not moving, or moving one space N, SW or SE.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =140a(4) =5680a(5) =606201a(6) =181540773a(7) =150293731826
External references
- oeis: A189428