Number of (2+1) X (n+1) 0..3 arrays with the difference between each 2 X 2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
A235666
Number of (2+1) X (n+1) 0..3 arrays with the difference between each 2 X 2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
Terms
- a(0) =3038a(1) =105752a(2) =3405756a(3) =98555090a(4) =2711168860a(5) =71121044662
External references
- oeis: A235666