T(n,k)=Number of n X k arrays with rows being permutations of 0..k-1 and no column j greater than column j-1 in all rows
1, 1, 1, 1, 3, 1, 1, 19, 7, 1, 1, 211, 163, 15, 1, 1, 3651, 8983, 1135, 31, 1, 1, 90921
2 seqfan posts
Tue May 29 16:13:35 CEST 2012 [seqfan] Re: counting matrices by column rises