Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having no ascents and no descents of length 1, and having k peaks at odd level.
A167634
Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having no ascents and no descents of length 1, and having k peaks at odd level.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =0a(8) =3a(9) =1a(10) =5a(11) =2a(12) =1a(13) =1a(14) =10a(15) =5a(16) =1a(17) =14a(18) =12a(19) =9a(20) =2a(21) =7a(22) =38a(23) =27a(24) =9a(25) =1a(26) =43a(27) =60a(28) =57a(29) =22
External references
- oeis: A167634