Number of (n+2)X(n+2) binary arrays with each 3X3 subblock nonsingular.
A185525
Number of (n+2)X(n+2) binary arrays with each 3X3 subblock nonsingular.
Terms
- a(0) =174a(1) =4362a(2) =215644a(3) =19941490a(4) =3749400138
External references
- oeis: A185525