A372873 - cp's OEIS frontend

A372873 Triangle read by rows: T(n,k) is the number of flattened Catalan words of length n with exactly k runs of descents.

n	a(n)
1	1
2	0
3	2
4	0
5	1
6	4
7	0
8	0
9	6
10	8
11	0
12	0
13	1
14	24
15	16
16	0
17	0
18	0
19	10
20	80
21	32
22	0
23	0
24	0
25	1
26	60
27	240
28	64
29	0
30	0
31	0
32	0
33	14
34	280
35	672
36	128
37	0
38	0
39	0
40	0
41	1
42	112
43	1120
44	1792
45	256
46	0
47	0
48	0
49	0
50	0
51	18
52	672
53	4032
54	4608
55	512
56	0
57	0
58	0
59	0
60	0
61	1
62	180
63	3360
64	13440
65	11520
66	1024

[1, 0, 2, 0, 1, 4, 0, 0, 6, 8, 0, 0, 1, 24, 16, 0, 0, 0, 10, 80, 32, 0, 0, 0, 1, 60, 240, 64, 0, 0, 0, 0, 14, 280, 672, 128, 0, 0, 0, 0, 1, 112, 1120, 1792, 256, 0, 0, 0, 0, 0, 18, 672, 4032, 4608, 512, 0, 0, 0, 0, 0, 1, 180, 3360, 13440, 11520, 1024]

cp's OEIS Frontend

A372873 Triangle read by rows: T(n,k) is the number of flattened Catalan words of length n with exactly k runs of descents.

Table of values

List of values