Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254552
Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =1964388a(1) =3894656a(2) =10792398a(3) =32790229a(4) =59892062a(5) =174169154a(6) =479026957a(7) =1214424748a(8) =3174330616a(9) =8371947986a(10) =22077132240a(11) =59499764494a(12) =162041829116a(13) =441051167564
External references
- oeis: A254552