Number of (n+1)X(5+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise.
A235553
Number of (n+1)X(5+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =660a(1) =9320a(2) =184281a(3) =3824372a(4) =74362722a(5) =1271453587a(6) =19182239308a(7) =256273383832
External references
- oeis: A235553