Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A253987
Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =2736a(1) =13188a(2) =71116a(3) =406183a(4) =2136758a(5) =11055001a(6) =57285940a(7) =292920515a(8) =1484002479a(9) =7476194054a(10) =37444501224a(11) =186551627339a(12) =925459276687
External references
- oeis: A253987