Number of (n+2)X(4+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.
A251678
Number of (n+2)X(4+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.
Terms
- a(0) =2257a(1) =5065a(2) =16467a(3) =64309a(4) =264983a(5) =1116829a(6) =4748285a(7) =20262955a(8) =86674549a(9) =370897287a(10) =1587178279a(11) =6793752837a(12) =29083759187a(13) =124506509193a(14) =533008374225
External references
- oeis: A251678