Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A253988
Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =11872a(1) =68176a(2) =477856a(3) =3678188a(4) =25361960a(5) =175815629a(6) =1239374238a(7) =8586595803a(8) =59232122744a(9) =407768029544
External references
- oeis: A253988