A103691 - cp's OEIS frontend

A103691 Triangle read by rows: T(n,k) = number of bracelets of n beads (necklaces that can be flipped over) with exactly two colors and k white beads, for which the length (or abs value) of sum of the position vectors of the white beads are different.

n	a(n)
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	2
10	2
11	1
12	1
13	3
14	3
15	3
16	1
17	1
18	3
19	4
20	4
21	3
22	1
23	1
24	4
25	4
26	6
27	4
28	4
29	1
30	1
31	4
32	7
33	10
34	10
35	7
36	4
37	1
38	1
39	5
40	7
41	11
42	11
43	11
44	7
45	5
46	1
47	1
48	5
49	10
50	20
51	26
52	26
53	20
54	10
55	5
56	1
57	1
58	6
59	10
60	16
61	18
62	20
63	18
64	16
65	10
66	6
67	1
68	1
69	6
70	14
71	34
72	57
73	74
74	74
75	57
76	34
77	14
78	6
79	1
80	1
81	7
82	14
83	33
84	44
85	53
86	53
87	53
88	44
89	33

[1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 3, 3, 3, 1, 1, 3, 4, 4, 3, 1, 1, 4, 4, 6, 4, 4, 1, 1, 4, 7, 10, 10, 7, 4, 1, 1, 5, 7, 11, 11, 11, 7, 5, 1, 1, 5, 10, 20, 26, 26, 20, 10, 5, 1, 1, 6, 10, 16, 18, 20, 18, 16, 10, 6, 1, 1, 6, 14, 34, 57, 74, 74, 57, 34, 14, 6, 1, 1, 7, 14, 33, 44, 53, 53, 53, 44, 33]

cp's OEIS Frontend

A103691 Triangle read by rows: T(n,k) = number of bracelets of n beads (necklaces that can be flipped over) with exactly two colors and k white beads, for which the length (or abs value) of sum of the position vectors of the white beads are different.

Table of values

List of values

n	a(n)
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	2
10	2
11	1
12	1
13	3
14	3
15	3
16	1
17	1
18	3
19	4
20	4
21	3
22	1
23	1
24	4
25	4
26	6
27	4
28	4
29	1
30	1
31	4
32	7
33	10
34	10
35	7
36	4
37	1
38	1
39	5
40	7
41	11
42	11
43	11
44	7
45	5
46	1
47	1
48	5
49	10
50	20
51	26
52	26
53	20
54	10
55	5
56	1
57	1
58	6
59	10
60	16
61	18
62	20
63	18
64	16
65	10
66	6
67	1
68	1
69	6
70	14
71	34
72	57
73	74
74	74
75	57
76	34
77	14
78	6
79	1
80	1
81	7
82	14
83	33
84	44
85	53
86	53
87	53
88	44
89	33

n	a(n)
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	2
10	2
11	1
12	1
13	3
14	3
15	3
16	1
17	1
18	3
19	4
20	4
21	3
22	1
23	1
24	4
25	4
26	6
27	4
28	4
29	1
30	1
31	4
32	7
33	10
34	10
35	7
36	4
37	1
38	1
39	5
40	7
41	11
42	11
43	11
44	7
45	5
46	1
47	1
48	5
49	10
50	20
51	26
52	26
53	20
54	10
55	5
56	1
57	1
58	6
59	10
60	16
61	18
62	20
63	18
64	16
65	10
66	6
67	1
68	1
69	6
70	14
71	34
72	57
73	74
74	74
75	57
76	34
77	14
78	6
79	1
80	1
81	7
82	14
83	33
84	44
85	53
86	53
87	53
88	44
89	33

n	a(n)
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	2
10	2
11	1
12	1
13	3
14	3
15	3
16	1
17	1
18	3
19	4
20	4
21	3
22	1
23	1
24	4
25	4
26	6
27	4
28	4
29	1
30	1
31	4
32	7
33	10
34	10
35	7
36	4
37	1
38	1
39	5
40	7
41	11
42	11
43	11
44	7
45	5
46	1
47	1
48	5
49	10
50	20
51	26
52	26
53	20
54	10
55	5
56	1
57	1
58	6
59	10
60	16
61	18
62	20
63	18
64	16
65	10
66	6
67	1
68	1
69	6
70	14
71	34
72	57
73	74
74	74
75	57
76	34
77	14
78	6
79	1
80	1
81	7
82	14
83	33
84	44
85	53
86	53
87	53
88	44
89	33