A352737 - cp's OEIS frontend

A352737 Number of oriented two-component rational links (or two-bridge links) with crossing number n (a chiral pair is counted as two distinct ones).

n	a(n)
2	2
3	0
4	4
5	2
6	10
7	10
8	30
9	42
10	102
11	170
12	374
13	682
14	1430
15	2730
16	5590
17	10922
18	22102
19	43690
20	87894
21	174762
22	350550
23	699050
24	1400150
25	2796202
26	5596502
27	11184810
28	22377814
29	44739242
30	89494870
31	178956970
32	357946710
33	715827882
34	1431721302
35	2863311530
36	5726754134
37	11453246122

[2, 0, 4, 2, 10, 10, 30, 42, 102, 170, 374, 682, 1430, 2730, 5590, 10922, 22102, 43690, 87894, 174762, 350550, 699050, 1400150, 2796202, 5596502, 11184810, 22377814, 44739242, 89494870, 178956970, 357946710, 715827882, 1431721302, 2863311530, 5726754134, 11453246122]

cp's OEIS Frontend

A352737 Number of oriented two-component rational links (or two-bridge links) with crossing number n (a chiral pair is counted as two distinct ones).

Table of values

List of values