181429domain: NAppears in sequencesNumber 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=14A258553Worst cases for Hart's one-line factorization (OLF) method with multiplier M = 1, see comments.at n=15A284522