277585

Appears in sequences

• Number of n X 6 nonnegative integer arrays with upper left 0 and lower right n+6-4 and value increasing by 0 or 1 with every step right or down.at n=6A252874
• Number of nX7 nonnegative integer arrays with upper left 0 and lower right n+7-4 and value increasing by 0 or 1 with every step right or down.at n=5A252875