Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.
A235405
Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.
Terms
- a(0) =11100a(1) =924132a(2) =129700247a(3) =12449201480
External references
- oeis: A235405