A070682 - cp's OEIS frontend

A070682 Smallest m in range 1..phi(2n+1) such that 10^m == 1 mod 2n+1, or 0 if no such number exists.

n	a(n)
0	0
1	1
2	0
3	6
4	1
5	2
6	6
7	0
8	16
9	18
10	6
11	22
12	0
13	3
14	28
15	15
16	2
17	0
18	3
19	6
20	5
21	21
22	0
23	46
24	42
25	16
26	13
27	0
28	18
29	58
30	60
31	6
32	0
33	33
34	22
35	35
36	8
37	0
38	6
39	13
40	9
41	41
42	0
43	28
44	44
45	6
46	15
47	0
48	96
49	2
50	4
51	34
52	0
53	53
54	108
55	3
56	112
57	0
58	6
59	48
60	22
61	5
62	0
63	42
64	21
65	130
66	18
67	0
68	8
69	46
70	46
71	6
72	0
73	42
74	148

[0, 1, 0, 6, 1, 2, 6, 0, 16, 18, 6, 22, 0, 3, 28, 15, 2, 0, 3, 6, 5, 21, 0, 46, 42, 16, 13, 0, 18, 58, 60, 6, 0, 33, 22, 35, 8, 0, 6, 13, 9, 41, 0, 28, 44, 6, 15, 0, 96, 2, 4, 34, 0, 53, 108, 3, 112, 0, 6, 48, 22, 5, 0, 42, 21, 130, 18, 0, 8, 46, 46, 6, 0, 42, 148]

cp's OEIS Frontend

A070682 Smallest m in range 1..phi(2n+1) such that 10^m == 1 mod 2n+1, or 0 if no such number exists.

Table of values

List of values

n	a(n)
0	0
1	1
2	0
3	6
4	1
5	2
6	6
7	0
8	16
9	18
10	6
11	22
12	0
13	3
14	28
15	15
16	2
17	0
18	3
19	6
20	5
21	21
22	0
23	46
24	42
25	16
26	13
27	0
28	18
29	58
30	60
31	6
32	0
33	33
34	22
35	35
36	8
37	0
38	6
39	13
40	9
41	41
42	0
43	28
44	44
45	6
46	15
47	0
48	96
49	2
50	4
51	34
52	0
53	53
54	108
55	3
56	112
57	0
58	6
59	48
60	22
61	5
62	0
63	42
64	21
65	130
66	18
67	0
68	8
69	46
70	46
71	6
72	0
73	42
74	148

n	a(n)
0	0
1	1
2	0
3	6
4	1
5	2
6	6
7	0
8	16
9	18
10	6
11	22
12	0
13	3
14	28
15	15
16	2
17	0
18	3
19	6
20	5
21	21
22	0
23	46
24	42
25	16
26	13
27	0
28	18
29	58
30	60
31	6
32	0
33	33
34	22
35	35
36	8
37	0
38	6
39	13
40	9
41	41
42	0
43	28
44	44
45	6
46	15
47	0
48	96
49	2
50	4
51	34
52	0
53	53
54	108
55	3
56	112
57	0
58	6
59	48
60	22
61	5
62	0
63	42
64	21
65	130
66	18
67	0
68	8
69	46
70	46
71	6
72	0
73	42
74	148

n	a(n)
0	0
1	1
2	0
3	6
4	1
5	2
6	6
7	0
8	16
9	18
10	6
11	22
12	0
13	3
14	28
15	15
16	2
17	0
18	3
19	6
20	5
21	21
22	0
23	46
24	42
25	16
26	13
27	0
28	18
29	58
30	60
31	6
32	0
33	33
34	22
35	35
36	8
37	0
38	6
39	13
40	9
41	41
42	0
43	28
44	44
45	6
46	15
47	0
48	96
49	2
50	4
51	34
52	0
53	53
54	108
55	3
56	112
57	0
58	6
59	48
60	22
61	5
62	0
63	42
64	21
65	130
66	18
67	0
68	8
69	46
70	46
71	6
72	0
73	42
74	148