Triangle read by rows: T(n,k) is the number of Dyck n-paths containing k even-length ascents (0 <= k <= floor(n/2)).
A143950
Triangle read by rows: T(n,k) is the number of Dyck n-paths containing k even-length ascents (0 <= k <= floor(n/2)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =5a(7) =7a(8) =2a(9) =12a(10) =20a(11) =10a(12) =30a(13) =61a(14) =36a(15) =5a(16) =79a(17) =182a(18) =133a(19) =35a(20) =213a(21) =547a(22) =488a(23) =168a(24) =14a(25) =584a(26) =1668a(27) =1728a(28) =756a(29) =126
External references
- oeis: A143950