Number of n X n 0..1 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..1 introduced in row major order.
A240650
Number of n X n 0..1 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..1 introduced in row major order.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =91a(4) =2456a(5) =184819a(6) =37066859a(7) =18940533171
External references
- oeis: A240650