A166286 - cp's OEIS frontend

A166286 Number of Dyck paths with no UUU's and no DDD's, of semilength n having no peak plateaux (U=(1,1), D=(1,-1)).

n	a(n)
0	1
1	1
2	2
3	3
4	5
5	9
6	17
7	34
8	70
9	147
10	313
11	673
12	1459
13	3185
14	6995
15	15445
16	34265
17	76342
18	170744
19	383214
20	862814
21	1948299
22	4411167
23	10011973
24	22775773
25	51920833
26	118593423
27	271376295
28	622047011
29	1428128025
30	3283679333
31	7560750299

[1, 1, 2, 3, 5, 9, 17, 34, 70, 147, 313, 673, 1459, 3185, 6995, 15445, 34265, 76342, 170744, 383214, 862814, 1948299, 4411167, 10011973, 22775773, 51920833, 118593423, 271376295, 622047011, 1428128025, 3283679333, 7560750299]

cp's OEIS Frontend

A166286 Number of Dyck paths with no UUU's and no DDD's, of semilength n having no peak plateaux (U=(1,1), D=(1,-1)).

Table of values

List of values