Triangle read by rows: T(n,k) is the number of Grand Dyck paths of semilength n and having k returns to the x-axis.
A108747
Triangle read by rows: T(n,k) is the number of Grand Dyck paths of semilength n and having k returns to the x-axis.
Terms
- a(0) =2a(1) =2a(2) =4a(3) =4a(4) =8a(5) =8a(6) =10a(7) =20a(8) =24a(9) =16a(10) =28a(11) =56a(12) =72a(13) =64a(14) =32a(15) =84a(16) =168a(17) =224a(18) =224a(19) =160a(20) =64a(21) =264a(22) =528a(23) =720a(24) =768a(25) =640a(26) =384a(27) =128a(28) =858a(29) =1716
External references
- oeis: A108747