Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically.
A254887
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically.
Terms
- a(0) =512a(1) =8944a(2) =171400a(3) =4577708a(4) =42268052a(5) =290329276a(6) =1890553676a(7) =6706657300a(8) =27187563600a(9) =107210607174a(10) =372692369806
External references
- oeis: A254887