66727

Appears in sequences

• Concatenations C1 and C2 and C3 and C4 are all prime (see the comment lines).at n=18A034819
• Sum of the smallest parts of all compositions of n.at n=16A097939
• Sum of the altitudes of the leftmost valleys of all Dyck paths of semilength n (if path has no valley, then this altitude is taken to be 0).at n=11A143955