A086780 - cp's OEIS frontend

A086780 Number of negative terms in n-th cyclotomic polynomial.

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	2
11	0
12	1
13	0
14	3
15	3
16	0
17	0
18	1
19	0
20	2
21	4
22	5
23	0
24	1
25	0
26	6
27	0
28	3
29	0
30	3
31	0
32	0
33	7
34	8
35	8
36	1
37	0
38	9
39	8
40	2
41	0
42	4
43	0
44	5
45	3
46	11
47	0
48	1
49	0
50	2
51	11
52	6
53	0
54	1
55	8
56	3
57	12
58	14
59	0
60	3
61	0
62	15
63	4
64	0
65	15
66	7
67	0
68	8
69	15
70	8
71	0
72	1
73	0
74	18
75	3
76	9
77	15
78	8
79	0
80	2
81	0
82	20
83	0
84	4
85	20
86	21
87	19
88	5
89	0
90	3
91	11
92	11
93	20
94	23
95	15
96	1

[1, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 3, 3, 0, 0, 1, 0, 2, 4, 5, 0, 1, 0, 6, 0, 3, 0, 3, 0, 0, 7, 8, 8, 1, 0, 9, 8, 2, 0, 4, 0, 5, 3, 11, 0, 1, 0, 2, 11, 6, 0, 1, 8, 3, 12, 14, 0, 3, 0, 15, 4, 0, 15, 7, 0, 8, 15, 8, 0, 1, 0, 18, 3, 9, 15, 8, 0, 2, 0, 20, 0, 4, 20, 21, 19, 5, 0, 3, 11, 11, 20, 23, 15, 1]

cp's OEIS Frontend

A086780 Number of negative terms in n-th cyclotomic polynomial.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	2
11	0
12	1
13	0
14	3
15	3
16	0
17	0
18	1
19	0
20	2
21	4
22	5
23	0
24	1
25	0
26	6
27	0
28	3
29	0
30	3
31	0
32	0
33	7
34	8
35	8
36	1
37	0
38	9
39	8
40	2
41	0
42	4
43	0
44	5
45	3
46	11
47	0
48	1
49	0
50	2
51	11
52	6
53	0
54	1
55	8
56	3
57	12
58	14
59	0
60	3
61	0
62	15
63	4
64	0
65	15
66	7
67	0
68	8
69	15
70	8
71	0
72	1
73	0
74	18
75	3
76	9
77	15
78	8
79	0
80	2
81	0
82	20
83	0
84	4
85	20
86	21
87	19
88	5
89	0
90	3
91	11
92	11
93	20
94	23
95	15
96	1

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	2
11	0
12	1
13	0
14	3
15	3
16	0
17	0
18	1
19	0
20	2
21	4
22	5
23	0
24	1
25	0
26	6
27	0
28	3
29	0
30	3
31	0
32	0
33	7
34	8
35	8
36	1
37	0
38	9
39	8
40	2
41	0
42	4
43	0
44	5
45	3
46	11
47	0
48	1
49	0
50	2
51	11
52	6
53	0
54	1
55	8
56	3
57	12
58	14
59	0
60	3
61	0
62	15
63	4
64	0
65	15
66	7
67	0
68	8
69	15
70	8
71	0
72	1
73	0
74	18
75	3
76	9
77	15
78	8
79	0
80	2
81	0
82	20
83	0
84	4
85	20
86	21
87	19
88	5
89	0
90	3
91	11
92	11
93	20
94	23
95	15
96	1

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	2
11	0
12	1
13	0
14	3
15	3
16	0
17	0
18	1
19	0
20	2
21	4
22	5
23	0
24	1
25	0
26	6
27	0
28	3
29	0
30	3
31	0
32	0
33	7
34	8
35	8
36	1
37	0
38	9
39	8
40	2
41	0
42	4
43	0
44	5
45	3
46	11
47	0
48	1
49	0
50	2
51	11
52	6
53	0
54	1
55	8
56	3
57	12
58	14
59	0
60	3
61	0
62	15
63	4
64	0
65	15
66	7
67	0
68	8
69	15
70	8
71	0
72	1
73	0
74	18
75	3
76	9
77	15
78	8
79	0
80	2
81	0
82	20
83	0
84	4
85	20
86	21
87	19
88	5
89	0
90	3
91	11
92	11
93	20
94	23
95	15
96	1