163050236504domain: NAppears in sequencesNumber of n X 7 0..6 arrays with no column j greater than column j-1 in all rows.at n=1A212929T(n,k) = number of n X k 0..k-1 arrays with no column j greater than column j-1 in all rows.at n=29A212930Number of 2Xn 0..n-1 arrays with no column j greater than column j-1 in all rows.at n=6A212931