Number of (n+1)X(2+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise.
A235438
Number of (n+1)X(2+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise.
Terms
- a(0) =450a(1) =5295a(2) =65497a(3) =606279a(4) =5672018a(5) =42941705a(6) =326261718a(7) =2114123393a(8) =13717203464a(9) =78618554282a(10) =450962719878
External references
- oeis: A235438