Number of nX7 array permutations with each element not moved or moved diagonally or antidiagonally by one.
A189278
Number of nX7 array permutations with each element not moved or moved diagonally or antidiagonally by one.
Terms
- a(0) =1a(1) =441a(2) =28125a(3) =3553225a(4) =361199937a(5) =39085685401
External references
- oeis: A189278