A181876 - cp's OEIS frontend

A181876 Denominators of coefficient array of minimal polynomials of cos(2*Pi/n). Rising powers in x.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	4
10	2
11	1
12	2
13	1
14	8
15	2
16	2
17	1
18	2
19	1
20	1
21	8
22	4
23	1
24	1
25	4
26	2
27	1
28	32
29	16
30	8
31	1
32	2
33	1
34	4
35	1
36	1
37	64
38	32
39	8
40	2
41	4
42	2
43	1
44	8
45	2
46	2
47	1
48	16
49	2
50	1
51	2
52	1
53	8
54	1
55	1
56	1
57	1
58	256
59	32
60	32
61	16
62	16
63	4
64	4
65	2
66	1
67	8
68	4
69	1
70	1
71	512
72	256
73	64
74	16
75	32
76	16
77	8
78	1
79	2
80	1
81	16
82	1
83	4
84	1
85	1
86	64
87	4
88	2
89	4
90	2
91	2

[1, 1, 1, 1, 2, 1, 1, 1, 4, 2, 1, 2, 1, 8, 2, 2, 1, 2, 1, 1, 8, 4, 1, 1, 4, 2, 1, 32, 16, 8, 1, 2, 1, 4, 1, 1, 64, 32, 8, 2, 4, 2, 1, 8, 2, 2, 1, 16, 2, 1, 2, 1, 8, 1, 1, 1, 1, 256, 32, 32, 16, 16, 4, 4, 2, 1, 8, 4, 1, 1, 512, 256, 64, 16, 32, 16, 8, 1, 2, 1, 16, 1, 4, 1, 1, 64, 4, 2, 4, 2, 2]

cp's OEIS Frontend

A181876 Denominators of coefficient array of minimal polynomials of cos(2*Pi/n). Rising powers in x.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	4
10	2
11	1
12	2
13	1
14	8
15	2
16	2
17	1
18	2
19	1
20	1
21	8
22	4
23	1
24	1
25	4
26	2
27	1
28	32
29	16
30	8
31	1
32	2
33	1
34	4
35	1
36	1
37	64
38	32
39	8
40	2
41	4
42	2
43	1
44	8
45	2
46	2
47	1
48	16
49	2
50	1
51	2
52	1
53	8
54	1
55	1
56	1
57	1
58	256
59	32
60	32
61	16
62	16
63	4
64	4
65	2
66	1
67	8
68	4
69	1
70	1
71	512
72	256
73	64
74	16
75	32
76	16
77	8
78	1
79	2
80	1
81	16
82	1
83	4
84	1
85	1
86	64
87	4
88	2
89	4
90	2
91	2

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	4
10	2
11	1
12	2
13	1
14	8
15	2
16	2
17	1
18	2
19	1
20	1
21	8
22	4
23	1
24	1
25	4
26	2
27	1
28	32
29	16
30	8
31	1
32	2
33	1
34	4
35	1
36	1
37	64
38	32
39	8
40	2
41	4
42	2
43	1
44	8
45	2
46	2
47	1
48	16
49	2
50	1
51	2
52	1
53	8
54	1
55	1
56	1
57	1
58	256
59	32
60	32
61	16
62	16
63	4
64	4
65	2
66	1
67	8
68	4
69	1
70	1
71	512
72	256
73	64
74	16
75	32
76	16
77	8
78	1
79	2
80	1
81	16
82	1
83	4
84	1
85	1
86	64
87	4
88	2
89	4
90	2
91	2

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	4
10	2
11	1
12	2
13	1
14	8
15	2
16	2
17	1
18	2
19	1
20	1
21	8
22	4
23	1
24	1
25	4
26	2
27	1
28	32
29	16
30	8
31	1
32	2
33	1
34	4
35	1
36	1
37	64
38	32
39	8
40	2
41	4
42	2
43	1
44	8
45	2
46	2
47	1
48	16
49	2
50	1
51	2
52	1
53	8
54	1
55	1
56	1
57	1
58	256
59	32
60	32
61	16
62	16
63	4
64	4
65	2
66	1
67	8
68	4
69	1
70	1
71	512
72	256
73	64
74	16
75	32
76	16
77	8
78	1
79	2
80	1
81	16
82	1
83	4
84	1
85	1
86	64
87	4
88	2
89	4
90	2
91	2