Number of (n+1)X(4+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.
A235505
Number of (n+1)X(4+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =343500a(1) =123132965a(2) =51929974331
External references
- oeis: A235505