Number of n X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
A284215
Number of n X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
Terms
- a(0) =1a(1) =6a(2) =70a(3) =6511a(4) =2417194a(5) =3945536189
External references
- oeis: A284215