Number of (n+2) X (n+2) 0..1 arrays with every 3 X 3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically.
A253928
Number of (n+2) X (n+2) 0..1 arrays with every 3 X 3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically.
Terms
- a(0) =512a(1) =8384a(2) =124496a(3) =1664470a(4) =3515548a(5) =11962178a(6) =31663440a(7) =59454484a(8) =186710316a(9) =670206564a(10) =2390903880a(11) =9098362320a(12) =35531364902a(13) =139249093536a(14) =552399655264
External references
- oeis: A253928