Number of n X n 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A268767
Number of n X n 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =12a(2) =112a(3) =2296a(4) =64112a(5) =3104544a(6) =255353744a(7) =36091542548
External references
- oeis: A268767