116204

Appears in sequences

• Number of (1,1) steps starting at level zero in all peakless Motzkin paths of length n+3.at n=13A089737
• Triangle read by rows: T(n,k) (0 <= k <= ceiling(n/2)-2) is the number of (1,1) steps starting at level k in all peakless Motzkin paths of length n (can be easily translated into RNA secondary structure terminology).at n=49A110238