Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n having k UU's starting at level 0 (i.e., doublerises at level 1; n >= 0, 0 <= k <= floor(n/2)).
A129168
Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n having k UU's starting at level 0 (i.e., doublerises at level 1; n >= 0, 0 <= k <= floor(n/2)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =9a(6) =1a(7) =33a(8) =2a(9) =1a(10) =119a(11) =17a(12) =1a(13) =443a(14) =97a(15) =2a(16) =1a(17) =1716a(18) =477a(19) =25a(20) =1a(21) =6884a(22) =2205a(23) =193a(24) =2a(25) =1a(26) =28403a(27) =9947a(28) =1203a(29) =33
External references
- oeis: A129168