A060972 - cp's OEIS frontend

A060972 Triangle giving numbers of closed plane meanders.

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	20
9	20
10	1
11	1
12	50
13	160
14	50
15	1
16	1
17	105
18	808
19	808
20	105
21	1
22	1
23	196
24	3066
25	7294
26	3066
27	196
28	1
29	1
30	336
31	9552
32	45588
33	45588
34	9552
35	336
36	1
37	1
38	540
39	25740
40	220362
41	440172
42	220362
43	25740
44	540
45	1
46	1
47	825
48	62040
49	879840
50	3133724
51	3133724
52	879840
53	62040
54	825
55	1
56	1
57	1210
58	136851
59	3028454
60	17752636
61	31586346
62	17752636
63	3028454
64	136851
65	1210
66	1

[1, 1, 1, 1, 6, 1, 1, 20, 20, 1, 1, 50, 160, 50, 1, 1, 105, 808, 808, 105, 1, 1, 196, 3066, 7294, 3066, 196, 1, 1, 336, 9552, 45588, 45588, 9552, 336, 1, 1, 540, 25740, 220362, 440172, 220362, 25740, 540, 1, 1, 825, 62040, 879840, 3133724, 3133724, 879840, 62040, 825, 1, 1, 1210, 136851, 3028454, 17752636, 31586346, 17752636, 3028454, 136851, 1210, 1]

cp's OEIS Frontend

A060972 Triangle giving numbers of closed plane meanders.

Table of values

List of values