Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UUU's (triplerises) (n >= 0; 0 <= k <= n-2 for n >= 2).
A128719
Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UUU's (triplerises) (n >= 0; 0 <= k <= n-2 for n >= 2).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =4a(5) =16a(6) =12a(7) =8a(8) =40a(9) =53a(10) =28a(11) =16a(12) =109a(13) =176a(14) =162a(15) =64a(16) =32a(17) =297a(18) =625a(19) =633a(20) =456a(21) =144a(22) =64a(23) =836a(24) =2084a(25) =2677a(26) =2024a(27) =1216a(28) =320a(29) =128
External references
- oeis: A128719