A138474 - cp's OEIS frontend

A138474 Maximum possible magnitude of the x^n coefficient of a cyclotomic polynomial.

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

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, 4, 5, 4, 4, 4, 5, 5, 6, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 9, 9, 7, 8, 8, 10, 13, 12, 10, 12, 9, 11, 15, 13, 13, 14, 15, 13, 16, 15, 15, 14, 16, 24, 17, 21, 21, 16, 22, 28, 26, 23]

cp's OEIS Frontend

A138474 Maximum possible magnitude of the x^n coefficient of a cyclotomic polynomial.

Table of values

List of values

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

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

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