Number of (n+1)X(3+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.
A235817
Number of (n+1)X(3+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) =2287822a(2) =153490516a(3) =9225012664a(4) =513135357020
External references
- oeis: A235817