Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A253989
Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =51856a(1) =350496a(2) =3060398a(3) =30663580a(4) =271991670a(5) =2421183428a(6) =22204822621a(7) =200874606941
External references
- oeis: A253989