Number of (n+2)X(3+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5.
A251987
Number of (n+2)X(3+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5.
Terms
- a(0) =151635a(1) =3069283a(2) =79998655a(3) =2351304453a(4) =73509019463
External references
- oeis: A251987