A324428 - cp's OEIS frontend

A324428 Number T(n,k) of labeled cyclic chord diagrams with n chords such that every chord has length at least k; triangle T(n,k), n>=1, 1<=k<=n, read by rows.

n	a(n)
1	1
2	3
3	1
4	15
5	4
6	1
7	105
8	31
9	7
10	1
11	945
12	293
13	68
14	11
15	1
16	10395
17	3326
18	837
19	159
20	18
21	1
22	135135
23	44189
24	11863
25	2488
26	381
27	29
28	1
29	2027025
30	673471
31	189503
32	43169
33	7601
34	879
35	47
36	1
37	34459425
38	11588884
39	3377341
40	822113
41	160784
42	23559
43	2049
44	76
45	1
46	654729075
47	222304897
48	66564396
49	17066007
50	3621067
51	607897
52	72989
53	4788
54	123
55	1

[1, 3, 1, 15, 4, 1, 105, 31, 7, 1, 945, 293, 68, 11, 1, 10395, 3326, 837, 159, 18, 1, 135135, 44189, 11863, 2488, 381, 29, 1, 2027025, 673471, 189503, 43169, 7601, 879, 47, 1, 34459425, 11588884, 3377341, 822113, 160784, 23559, 2049, 76, 1, 654729075, 222304897, 66564396, 17066007, 3621067, 607897, 72989, 4788, 123, 1]

cp's OEIS Frontend

A324428 Number T(n,k) of labeled cyclic chord diagrams with n chords such that every chord has length at least k; triangle T(n,k), n>=1, 1<=k<=n, read by rows.

Table of values

List of values