Number of (n+1)X(6+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise.
A235411
Number of (n+1)X(6+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise.
Terms
- a(0) =1482a(1) =21707a(2) =397340a(3) =7379380a(4) =145005714a(5) =2573684600a(6) =48150637857a(7) =775525688659
External references
- oeis: A235411