Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k UUDU's starting at level 0.
A135330
Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k UUDU's starting at level 0.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =1a(5) =10a(6) =4a(7) =28a(8) =14a(9) =85a(10) =46a(11) =1a(12) =271a(13) =151a(14) =7a(15) =893a(16) =502a(17) =35a(18) =3013a(19) =1697a(20) =151a(21) =1a(22) =10351a(23) =5828a(24) =607a(25) =10a(26) =36075a(27) =20293a(28) =2353a(29) =65
External references
- oeis: A135330