Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254549
Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =47140a(1) =111443a(2) =388056a(3) =1193965a(4) =3450189a(5) =9912158a(6) =27729322a(7) =76395530a(8) =209879361a(9) =578181034a(10) =1602832753a(11) =4455603121a(12) =12441771494a(13) =34759502130a(14) =97208699643a(15) =271806597833a(16) =760315608690
External references
- oeis: A254549