A059910 - cp's OEIS frontend

A059910 a(n) = |{m : multiplicative order of n mod m = 5}|.

n	a(n)
1	0
2	1
3	4
4	6
5	9
6	4
7	4
8	6
9	20
10	9
11	8
12	2
13	6
14	6
15	12
16	44
17	5
18	6
19	18
20	14
21	12
22	4
23	4
24	2
25	56
26	13
27	20
28	4
29	6
30	2
31	40
32	6
33	18
34	12
35	12
36	44
37	63
38	6
39	28
40	4
41	16
42	14
43	8
44	2
45	18
46	12
47	28
48	14
49	70
50	3
51	42
52	12
53	42
54	6
55	24
56	8
57	56
58	44
59	60
60	6
61	60
62	2
63	4
64	90
65	21
66	20
67	24
68	2
69	18
70	60
71	88
72	6
73	12
74	2
75	28
76	26
77	6
78	28
79	8
80	14
81	170

[0, 1, 4, 6, 9, 4, 4, 6, 20, 9, 8, 2, 6, 6, 12, 44, 5, 6, 18, 14, 12, 4, 4, 2, 56, 13, 20, 4, 6, 2, 40, 6, 18, 12, 12, 44, 63, 6, 28, 4, 16, 14, 8, 2, 18, 12, 28, 14, 70, 3, 42, 12, 42, 6, 24, 8, 56, 44, 60, 6, 60, 2, 4, 90, 21, 20, 24, 2, 18, 60, 88, 6, 12, 2, 28, 26, 6, 28, 8, 14, 170]

cp's OEIS Frontend

A059910 a(n) = |{m : multiplicative order of n mod m = 5}|.

Table of values

List of values

n	a(n)
1	0
2	1
3	4
4	6
5	9
6	4
7	4
8	6
9	20
10	9
11	8
12	2
13	6
14	6
15	12
16	44
17	5
18	6
19	18
20	14
21	12
22	4
23	4
24	2
25	56
26	13
27	20
28	4
29	6
30	2
31	40
32	6
33	18
34	12
35	12
36	44
37	63
38	6
39	28
40	4
41	16
42	14
43	8
44	2
45	18
46	12
47	28
48	14
49	70
50	3
51	42
52	12
53	42
54	6
55	24
56	8
57	56
58	44
59	60
60	6
61	60
62	2
63	4
64	90
65	21
66	20
67	24
68	2
69	18
70	60
71	88
72	6
73	12
74	2
75	28
76	26
77	6
78	28
79	8
80	14
81	170

n	a(n)
1	0
2	1
3	4
4	6
5	9
6	4
7	4
8	6
9	20
10	9
11	8
12	2
13	6
14	6
15	12
16	44
17	5
18	6
19	18
20	14
21	12
22	4
23	4
24	2
25	56
26	13
27	20
28	4
29	6
30	2
31	40
32	6
33	18
34	12
35	12
36	44
37	63
38	6
39	28
40	4
41	16
42	14
43	8
44	2
45	18
46	12
47	28
48	14
49	70
50	3
51	42
52	12
53	42
54	6
55	24
56	8
57	56
58	44
59	60
60	6
61	60
62	2
63	4
64	90
65	21
66	20
67	24
68	2
69	18
70	60
71	88
72	6
73	12
74	2
75	28
76	26
77	6
78	28
79	8
80	14
81	170

n	a(n)
1	0
2	1
3	4
4	6
5	9
6	4
7	4
8	6
9	20
10	9
11	8
12	2
13	6
14	6
15	12
16	44
17	5
18	6
19	18
20	14
21	12
22	4
23	4
24	2
25	56
26	13
27	20
28	4
29	6
30	2
31	40
32	6
33	18
34	12
35	12
36	44
37	63
38	6
39	28
40	4
41	16
42	14
43	8
44	2
45	18
46	12
47	28
48	14
49	70
50	3
51	42
52	12
53	42
54	6
55	24
56	8
57	56
58	44
59	60
60	6
61	60
62	2
63	4
64	90
65	21
66	20
67	24
68	2
69	18
70	60
71	88
72	6
73	12
74	2
75	28
76	26
77	6
78	28
79	8
80	14
81	170