Number of 2Xn 0..n-1 arrays with no column j greater than column j-1 in all rows.
A212931
Number of 2Xn 0..n-1 arrays with no column j greater than column j-1 in all rows.
Terms
- a(0) =1a(1) =15a(2) =568a(3) =39695a(4) =4431876a(5) =724082352a(6) =163050236504
External references
- oeis: A212931