77550

Appears in sequences

• McKay-Thompson series of class 18b for the Monster group.at n=25A058537
• Three-quadrant Ferrers graphs that partition n.at n=19A059776
• Triangle read by rows: T(n,k) (0 <= k <= n) is the number of Delannoy paths of length n, having k return steps to the line y = x from the line y = x+1 (i.e., E steps from the line y=x+1 to the line y = x).at n=38A110098
• Numbers k such that A224787(k) - k is a square.at n=48A385238