A082654 - cp's OEIS frontend

A082654 Order of 4 mod n-th prime: least k such that prime(n) divides 4^k-1, n >= 2.

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	6
7	4
8	9
9	11
10	14
11	5
12	18
13	10
14	7
15	23
16	26
17	29
18	30
19	33
20	35
21	9
22	39
23	41
24	11
25	24
26	50
27	51
28	53
29	18
30	14
31	7
32	65
33	34
34	69
35	74
36	15
37	26
38	81
39	83
40	86
41	89
42	90
43	95
44	48
45	98
46	99
47	105
48	37
49	113
50	38
51	29
52	119
53	12
54	25
55	8
56	131
57	134
58	135
59	46
60	35
61	47
62	146
63	51
64	155
65	78
66	158

[0, 1, 2, 3, 5, 6, 4, 9, 11, 14, 5, 18, 10, 7, 23, 26, 29, 30, 33, 35, 9, 39, 41, 11, 24, 50, 51, 53, 18, 14, 7, 65, 34, 69, 74, 15, 26, 81, 83, 86, 89, 90, 95, 48, 98, 99, 105, 37, 113, 38, 29, 119, 12, 25, 8, 131, 134, 135, 46, 35, 47, 146, 51, 155, 78, 158]

cp's OEIS Frontend

A082654 Order of 4 mod n-th prime: least k such that prime(n) divides 4^k-1, n >= 2.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	6
7	4
8	9
9	11
10	14
11	5
12	18
13	10
14	7
15	23
16	26
17	29
18	30
19	33
20	35
21	9
22	39
23	41
24	11
25	24
26	50
27	51
28	53
29	18
30	14
31	7
32	65
33	34
34	69
35	74
36	15
37	26
38	81
39	83
40	86
41	89
42	90
43	95
44	48
45	98
46	99
47	105
48	37
49	113
50	38
51	29
52	119
53	12
54	25
55	8
56	131
57	134
58	135
59	46
60	35
61	47
62	146
63	51
64	155
65	78
66	158

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	6
7	4
8	9
9	11
10	14
11	5
12	18
13	10
14	7
15	23
16	26
17	29
18	30
19	33
20	35
21	9
22	39
23	41
24	11
25	24
26	50
27	51
28	53
29	18
30	14
31	7
32	65
33	34
34	69
35	74
36	15
37	26
38	81
39	83
40	86
41	89
42	90
43	95
44	48
45	98
46	99
47	105
48	37
49	113
50	38
51	29
52	119
53	12
54	25
55	8
56	131
57	134
58	135
59	46
60	35
61	47
62	146
63	51
64	155
65	78
66	158

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	6
7	4
8	9
9	11
10	14
11	5
12	18
13	10
14	7
15	23
16	26
17	29
18	30
19	33
20	35
21	9
22	39
23	41
24	11
25	24
26	50
27	51
28	53
29	18
30	14
31	7
32	65
33	34
34	69
35	74
36	15
37	26
38	81
39	83
40	86
41	89
42	90
43	95
44	48
45	98
46	99
47	105
48	37
49	113
50	38
51	29
52	119
53	12
54	25
55	8
56	131
57	134
58	135
59	46
60	35
61	47
62	146
63	51
64	155
65	78
66	158