A275823 - cp's OEIS frontend

A275823 Least k such that n divides phi(k^2).

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

[1, 2, 3, 4, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 5, 7, 11, 23, 12, 25, 13, 9, 14, 29, 15, 31, 8, 33, 17, 35, 18, 37, 19, 13, 10, 41, 7, 43, 22, 45, 23, 47, 12, 49, 25, 51, 13, 53, 9, 11, 28, 19, 29, 59, 15, 61, 31, 21, 16, 65, 33, 67, 17, 69, 35, 71, 36, 73, 37, 75, 38, 77, 13, 79, 20]

cp's OEIS Frontend

A275823 Least k such that n divides phi(k^2).

Table of values

List of values

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

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

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