570704

Appears in sequences

• Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k UUDD's starting at level 0; here U=(1,1), D=(1,-1) (0<=k<=floor(n/2)).at n=49A114486
• Number of Dyck paths of semilength n having no UUDD's starting at level 0.at n=13A114487