Triangle read by rows: T(n,k) is the number of Grand Dyck paths of semilength n that have k double rises above the x-axis (n >= 1, k >= 0).
A118964
Triangle read by rows: T(n,k) is the number of Grand Dyck paths of semilength n that have k double rises above the x-axis (n >= 1, k >= 0).
Terms
- a(0) =2a(1) =5a(2) =1a(3) =14a(4) =5a(5) =1a(6) =42a(7) =19a(8) =8a(9) =1a(10) =132a(11) =67a(12) =40a(13) =12a(14) =1a(15) =429a(16) =232a(17) =166a(18) =79a(19) =17a(20) =1a(21) =1430a(22) =804a(23) =634a(24) =395a(25) =145a(26) =23a(27) =1a(28) =4862a(29) =2806
External references
- oeis: A118964