A242595 - cp's OEIS frontend

A242595 a(n) is the primitive period length for the sequence 2^k (mod n), k = 1, 2, ...

n	a(n)
1	1
2	1
3	2
4	0
5	4
6	2
7	3
8	0
9	6
10	4
11	10
12	0
13	12
14	3
15	4
16	0
17	8
18	6
19	18
20	0
21	6
22	10
23	11
24	0
25	20
26	12
27	18
28	0
29	28
30	4
31	5
32	0
33	10
34	8
35	12
36	0
37	36
38	18
39	12
40	0
41	20
42	6
43	14
44	0
45	12
46	11
47	23
48	0
49	21
50	20
51	8
52	0
53	52
54	18
55	20
56	0
57	18
58	28
59	58
60	0
61	60
62	5
63	6
64	0
65	12
66	10
67	66
68	0
69	22
70	12
71	35
72	0
73	9
74	36
75	20
76	0
77	30
78	12
79	39
80	0
81	54
82	20
83	82
84	0
85	8
86	14
87	28
88	0

[1, 1, 2, 0, 4, 2, 3, 0, 6, 4, 10, 0, 12, 3, 4, 0, 8, 6, 18, 0, 6, 10, 11, 0, 20, 12, 18, 0, 28, 4, 5, 0, 10, 8, 12, 0, 36, 18, 12, 0, 20, 6, 14, 0, 12, 11, 23, 0, 21, 20, 8, 0, 52, 18, 20, 0, 18, 28, 58, 0, 60, 5, 6, 0, 12, 10, 66, 0, 22, 12, 35, 0, 9, 36, 20, 0, 30, 12, 39, 0, 54, 20, 82, 0, 8, 14, 28, 0]

cp's OEIS Frontend

A242595 a(n) is the primitive period length for the sequence 2^k (mod n), k = 1, 2, ...

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	0
5	4
6	2
7	3
8	0
9	6
10	4
11	10
12	0
13	12
14	3
15	4
16	0
17	8
18	6
19	18
20	0
21	6
22	10
23	11
24	0
25	20
26	12
27	18
28	0
29	28
30	4
31	5
32	0
33	10
34	8
35	12
36	0
37	36
38	18
39	12
40	0
41	20
42	6
43	14
44	0
45	12
46	11
47	23
48	0
49	21
50	20
51	8
52	0
53	52
54	18
55	20
56	0
57	18
58	28
59	58
60	0
61	60
62	5
63	6
64	0
65	12
66	10
67	66
68	0
69	22
70	12
71	35
72	0
73	9
74	36
75	20
76	0
77	30
78	12
79	39
80	0
81	54
82	20
83	82
84	0
85	8
86	14
87	28
88	0

n	a(n)
1	1
2	1
3	2
4	0
5	4
6	2
7	3
8	0
9	6
10	4
11	10
12	0
13	12
14	3
15	4
16	0
17	8
18	6
19	18
20	0
21	6
22	10
23	11
24	0
25	20
26	12
27	18
28	0
29	28
30	4
31	5
32	0
33	10
34	8
35	12
36	0
37	36
38	18
39	12
40	0
41	20
42	6
43	14
44	0
45	12
46	11
47	23
48	0
49	21
50	20
51	8
52	0
53	52
54	18
55	20
56	0
57	18
58	28
59	58
60	0
61	60
62	5
63	6
64	0
65	12
66	10
67	66
68	0
69	22
70	12
71	35
72	0
73	9
74	36
75	20
76	0
77	30
78	12
79	39
80	0
81	54
82	20
83	82
84	0
85	8
86	14
87	28
88	0

n	a(n)
1	1
2	1
3	2
4	0
5	4
6	2
7	3
8	0
9	6
10	4
11	10
12	0
13	12
14	3
15	4
16	0
17	8
18	6
19	18
20	0
21	6
22	10
23	11
24	0
25	20
26	12
27	18
28	0
29	28
30	4
31	5
32	0
33	10
34	8
35	12
36	0
37	36
38	18
39	12
40	0
41	20
42	6
43	14
44	0
45	12
46	11
47	23
48	0
49	21
50	20
51	8
52	0
53	52
54	18
55	20
56	0
57	18
58	28
59	58
60	0
61	60
62	5
63	6
64	0
65	12
66	10
67	66
68	0
69	22
70	12
71	35
72	0
73	9
74	36
75	20
76	0
77	30
78	12
79	39
80	0
81	54
82	20
83	82
84	0
85	8
86	14
87	28
88	0