A054715 - cp's OEIS frontend

A054715 Number of powers of 15 modulo n.

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

[1, 1, 2, 2, 2, 2, 1, 2, 3, 2, 5, 3, 12, 1, 2, 2, 8, 3, 18, 3, 2, 5, 22, 3, 3, 12, 4, 2, 28, 2, 10, 2, 6, 8, 2, 4, 36, 18, 13, 3, 40, 2, 21, 10, 3, 22, 46, 3, 7, 3, 9, 12, 13, 4, 6, 2, 19, 28, 29, 3, 15, 10, 3, 4, 13, 6, 11, 8, 23, 2, 35, 4, 72, 36, 3, 18, 5, 13, 26, 3, 5, 40, 82, 3, 9, 21, 29]

cp's OEIS Frontend

A054715 Number of powers of 15 modulo n.

Table of values

List of values

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

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

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