494688

Appears in sequences

• Number of nondecreasing Dyck paths of semilength n and having no peaks at odd level (n>=0). A nondecreasing Dyck path is a Dyck path for which the sequence of the altitudes of the valleys is nondecreasing.at n=21A121482
• Number of n X n arrays of squares of integers with every 3X3 subblock summing to 22.at n=2A159224