159254

Appears in sequences

• Number of noncrossing rooted trees with n nodes on a circle that do not have leaves at level 1.at n=9A023053
• Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges and k leaves at level 1.at n=45A101371
• Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=16A253839