Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
A235740
Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
Terms
- a(0) =26088a(1) =2423417a(2) =216691834a(3) =17653658980
External references
- oeis: A235740