Number of (n+1)X(n+1) 0..1 arrays with every element equal to some horizontal, vertical or antidiagonal neighbor, with top left element zero.
A232030
Number of (n+1)X(n+1) 0..1 arrays with every element equal to some horizontal, vertical or antidiagonal neighbor, with top left element zero.
Terms
- a(0) =3a(1) =76a(2) =6958a(3) =2504637a(4) =3495632937
External references
- oeis: A232030