236368domain: NAppears in sequencesExpansion of 1/sqrt(1-4x-8x^2-24x^3+36x^4).at n=8A108490Number of (7+1) X (n+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=32A258560