A206225 - cp's OEIS frontend

A206225 Numbers j such that the numbers Phi(j, m) are in sorted order for any integer m >= 2, where Phi(k, x) is the k-th cyclotomic polynomial.

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	10
7	12
8	8
9	5
10	14
11	18
12	9
13	7
14	15
15	20
16	24
17	16
18	30
19	22
20	11
21	21
22	26
23	28
24	36
25	42
26	13
27	34
28	40
29	48
30	32
31	60
32	17
33	38
34	54
35	27
36	19
37	33
38	44
39	50
40	25
41	66
42	46
43	23
44	35
45	39
46	52
47	45
48	56
49	72
50	90
51	84
52	78
53	70
54	58
55	29
56	62
57	31
58	51
59	68
60	80
61	96
62	64
63	120

[1, 2, 6, 4, 3, 10, 12, 8, 5, 14, 18, 9, 7, 15, 20, 24, 16, 30, 22, 11, 21, 26, 28, 36, 42, 13, 34, 40, 48, 32, 60, 17, 38, 54, 27, 19, 33, 44, 50, 25, 66, 46, 23, 35, 39, 52, 45, 56, 72, 90, 84, 78, 70, 58, 29, 62, 31, 51, 68, 80, 96, 64, 120]

cp's OEIS Frontend

A206225 Numbers j such that the numbers Phi(j, m) are in sorted order for any integer m >= 2, where Phi(k, x) is the k-th cyclotomic polynomial.

Table of values

List of values

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	10
7	12
8	8
9	5
10	14
11	18
12	9
13	7
14	15
15	20
16	24
17	16
18	30
19	22
20	11
21	21
22	26
23	28
24	36
25	42
26	13
27	34
28	40
29	48
30	32
31	60
32	17
33	38
34	54
35	27
36	19
37	33
38	44
39	50
40	25
41	66
42	46
43	23
44	35
45	39
46	52
47	45
48	56
49	72
50	90
51	84
52	78
53	70
54	58
55	29
56	62
57	31
58	51
59	68
60	80
61	96
62	64
63	120

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	10
7	12
8	8
9	5
10	14
11	18
12	9
13	7
14	15
15	20
16	24
17	16
18	30
19	22
20	11
21	21
22	26
23	28
24	36
25	42
26	13
27	34
28	40
29	48
30	32
31	60
32	17
33	38
34	54
35	27
36	19
37	33
38	44
39	50
40	25
41	66
42	46
43	23
44	35
45	39
46	52
47	45
48	56
49	72
50	90
51	84
52	78
53	70
54	58
55	29
56	62
57	31
58	51
59	68
60	80
61	96
62	64
63	120

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	10
7	12
8	8
9	5
10	14
11	18
12	9
13	7
14	15
15	20
16	24
17	16
18	30
19	22
20	11
21	21
22	26
23	28
24	36
25	42
26	13
27	34
28	40
29	48
30	32
31	60
32	17
33	38
34	54
35	27
36	19
37	33
38	44
39	50
40	25
41	66
42	46
43	23
44	35
45	39
46	52
47	45
48	56
49	72
50	90
51	84
52	78
53	70
54	58
55	29
56	62
57	31
58	51
59	68
60	80
61	96
62	64
63	120