6911195501domain: NAppears in sequencesCrystal ball sequence for 10-dimensional cubic lattice.at n=21A008421Number of peaks of the form ud in all paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1).at n=10A108448