A020513 - cp's OEIS frontend

A020513 Cyclotomic polynomials evaluated at x=-1.

n	a(n)
0	-1
1	-2
2	0
3	1
4	2
5	1
6	3
7	1
8	2
9	1
10	5
11	1
12	1
13	1
14	7
15	1
16	2
17	1
18	3
19	1
20	1
21	1
22	11
23	1
24	1
25	1
26	13
27	1
28	1
29	1
30	1
31	1
32	2
33	1
34	17
35	1
36	1
37	1
38	19
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	23
47	1
48	1
49	1
50	5
51	1
52	1
53	1
54	3
55	1
56	1
57	1
58	29
59	1
60	1
61	1
62	31
63	1
64	2

[-1, -2, 0, 1, 2, 1, 3, 1, 2, 1, 5, 1, 1, 1, 7, 1, 2, 1, 3, 1, 1, 1, 11, 1, 1, 1, 13, 1, 1, 1, 1, 1, 2, 1, 17, 1, 1, 1, 19, 1, 1, 1, 1, 1, 1, 1, 23, 1, 1, 1, 5, 1, 1, 1, 3, 1, 1, 1, 29, 1, 1, 1, 31, 1, 2]

cp's OEIS Frontend

A020513 Cyclotomic polynomials evaluated at x=-1.

Table of values

List of values

n	a(n)
0	-1
1	-2
2	0
3	1
4	2
5	1
6	3
7	1
8	2
9	1
10	5
11	1
12	1
13	1
14	7
15	1
16	2
17	1
18	3
19	1
20	1
21	1
22	11
23	1
24	1
25	1
26	13
27	1
28	1
29	1
30	1
31	1
32	2
33	1
34	17
35	1
36	1
37	1
38	19
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	23
47	1
48	1
49	1
50	5
51	1
52	1
53	1
54	3
55	1
56	1
57	1
58	29
59	1
60	1
61	1
62	31
63	1
64	2

n	a(n)
0	-1
1	-2
2	0
3	1
4	2
5	1
6	3
7	1
8	2
9	1
10	5
11	1
12	1
13	1
14	7
15	1
16	2
17	1
18	3
19	1
20	1
21	1
22	11
23	1
24	1
25	1
26	13
27	1
28	1
29	1
30	1
31	1
32	2
33	1
34	17
35	1
36	1
37	1
38	19
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	23
47	1
48	1
49	1
50	5
51	1
52	1
53	1
54	3
55	1
56	1
57	1
58	29
59	1
60	1
61	1
62	31
63	1
64	2

n	a(n)
0	-1
1	-2
2	0
3	1
4	2
5	1
6	3
7	1
8	2
9	1
10	5
11	1
12	1
13	1
14	7
15	1
16	2
17	1
18	3
19	1
20	1
21	1
22	11
23	1
24	1
25	1
26	13
27	1
28	1
29	1
30	1
31	1
32	2
33	1
34	17
35	1
36	1
37	1
38	19
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	23
47	1
48	1
49	1
50	5
51	1
52	1
53	1
54	3
55	1
56	1
57	1
58	29
59	1
60	1
61	1
62	31
63	1
64	2