57928domain: NAppears in sequencesA version of F. K. Hwang's sequence in {3*k, 3*k+1, 3*k+2}.at n=43A123945Number of (n+1) X (7+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=9A258553