Number of 7Xn arrays with each row a permutation of 1..n having at least as many downsteps as the preceding row.
A221629
Number of 7Xn arrays with each row a permutation of 1..n having at least as many downsteps as the preceding row.
Terms
- a(0) =1a(1) =8a(2) =29124a(3) =183919920
External references
- oeis: A221629