A247333 - cp's OEIS frontend

A247333 Number of Dyck paths of semilength n avoiding the consecutive step pattern UDUDU, where U=(1,1) and D=(1,-1).

n	a(n)
0	1
1	1
2	2
3	4
4	11
5	31
6	92
7	283
8	893
9	2875
10	9407
11	31189
12	104555
13	353794
14	1206821
15	4145350
16	14326184
17	49778473
18	173794610
19	609392578
20	2145057797
21	7577098816
22	26850456704
23	95425761829
24	340047930692
25	1214738997142
26	4349231444405
27	15604726428805
28	56098211626478

[1, 1, 2, 4, 11, 31, 92, 283, 893, 2875, 9407, 31189, 104555, 353794, 1206821, 4145350, 14326184, 49778473, 173794610, 609392578, 2145057797, 7577098816, 26850456704, 95425761829, 340047930692, 1214738997142, 4349231444405, 15604726428805, 56098211626478]

cp's OEIS Frontend

A247333 Number of Dyck paths of semilength n avoiding the consecutive step pattern UDUDU, where U=(1,1) and D=(1,-1).

Table of values

List of values