Number of (n+1) X (3+1) 0..3 arrays with the sum of each 2 X 2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.
A235778
Number of (n+1) X (3+1) 0..3 arrays with the sum of each 2 X 2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.
Terms
- a(0) =23024a(1) =1581879a(2) =101237218a(3) =5639406769a(4) =284827103857
External references
- oeis: A235778