A322176 - cp's OEIS frontend

A322176 Triangle read by rows: The number of chord diagrams on 2n vertices with m marked chords.

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	2
6	5
7	8
8	8
9	5
10	17
11	39
12	61
13	39
14	17
15	79
16	287
17	556
18	556
19	287
20	79
21	554
22	2792
23	6910
24	9058
25	6910
26	2792
27	554
28	5283
29	34650
30	103212
31	171195
32	171195
33	103212
34	34650
35	5283
36	65346
37	510593
38	1783325
39	3559031
40	4449494
41	3559031
42	1783325
43	510593
44	65346

[1, 1, 1, 2, 2, 2, 5, 8, 8, 5, 17, 39, 61, 39, 17, 79, 287, 556, 556, 287, 79, 554, 2792, 6910, 9058, 6910, 2792, 554, 5283, 34650, 103212, 171195, 171195, 103212, 34650, 5283, 65346, 510593, 1783325, 3559031, 4449494, 3559031, 1783325, 510593, 65346]

cp's OEIS Frontend

A322176 Triangle read by rows: The number of chord diagrams on 2n vertices with m marked chords.

Table of values

List of values