A190161 - cp's OEIS frontend

A190161 Number of subwords of type uh^ju and dh^jd (j>=1), where u=(1,1), h=(1,0), and d=(1,-1), in all peakless Motzkin paths of length n (can be easily expressed using RNA secondary structure terminology).

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	2
7	10
8	34
9	104
10	300
11	834
12	2270
13	6094
14	16206
15	42818
16	112606
17	295138
18	771616
19	2013550
20	5246954
21	13657882
22	35522364
23	92331014
24	239875614
25	622971814
26	1617463986
27	4198716114
28	10897812738
29	28282859174
30	73398069768
31	190474295608
32	494298218888
33	1282776917922

[0, 0, 0, 0, 0, 0, 2, 10, 34, 104, 300, 834, 2270, 6094, 16206, 42818, 112606, 295138, 771616, 2013550, 5246954, 13657882, 35522364, 92331014, 239875614, 622971814, 1617463986, 4198716114, 10897812738, 28282859174, 73398069768, 190474295608, 494298218888, 1282776917922]

cp's OEIS Frontend

A190161 Number of subwords of type uh^ju and dh^jd (j>=1), where u=(1,1), h=(1,0), and d=(1,-1), in all peakless Motzkin paths of length n (can be easily expressed using RNA secondary structure terminology).

Table of values

List of values