Triangle read by rows: T(n,k) is the number of n-Dyck paths containing k odd-length descents to ground level (0<=k<=n).
A143949
Triangle read by rows: T(n,k) is the number of n-Dyck paths containing k odd-length descents to ground level (0<=k<=n).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =3a(8) =0a(9) =1a(10) =4a(11) =4a(12) =5a(13) =0a(14) =1a(15) =10a(16) =17a(17) =7a(18) =7a(19) =0a(20) =1a(21) =32a(22) =46a(23) =34a(24) =10a(25) =9a(26) =0a(27) =1a(28) =100a(29) =155
External references
- oeis: A143949