Number of (3+1)X(n+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
A235820
Number of (3+1)X(n+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
Terms
- a(0) =28978a(1) =2273170a(2) =153490516a(3) =8998042696a(4) =482216047328
External references
- oeis: A235820