207350

Appears in sequences

• Number of 8 up, 8 down permutations of [n].at n=18A229889
• Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.at n=11A250607