Number of (n+1)X(n+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero.
A232069
Number of (n+1)X(n+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero.
Terms
- a(0) =3a(1) =87a(2) =6624a(3) =2265691a(4) =3154769585
External references
- oeis: A232069