Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k ascents of length 2.
A102402
Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k ascents of length 2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =6a(7) =6a(8) =2a(9) =17a(10) =15a(11) =10a(12) =46a(13) =51a(14) =30a(15) =5a(16) =128a(17) =175a(18) =91a(19) =35a(20) =372a(21) =568a(22) =336a(23) =140a(24) =14a(25) =1109a(26) =1827a(27) =1296a(28) =504a(29) =126
External references
- oeis: A102402