Triangle read by rows: T(n,k) = number of peakless Motzkin paths of length n having k (1,1) steps starting at level zero (can be easily expressed also in RNA secondary structure terminology).
A089736
Triangle read by rows: T(n,k) = number of peakless Motzkin paths of length n having k (1,1) steps starting at level zero (can be easily expressed also in RNA secondary structure terminology).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =1a(8) =7a(9) =1a(10) =15a(11) =1a(12) =1a(13) =31a(14) =5a(15) =1a(16) =64a(17) =17a(18) =1a(19) =134a(20) =49a(21) =1a(22) =1a(23) =286a(24) =129a(25) =7a(26) =1a(27) =623a(28) =323a(29) =31
External references
- oeis: A089736