A240658 - cp's OEIS frontend

A240658 Least k such that 3^k == -1 (mod prime(n)), or 0 if no such k exists.

n	a(n)
1	1
2	0
3	2
4	3
5	0
6	0
7	8
8	9
9	0
10	14
11	15
12	9
13	4
14	21
15	0
16	26
17	0
18	5
19	11
20	0
21	6
22	39
23	0
24	44
25	24
26	50
27	17
28	0
29	0
30	56
31	63
32	0
33	68
34	69
35	74
36	25
37	39
38	81
39	0
40	86
41	0
42	0
43	0
44	8
45	98
46	99
47	105
48	111
49	0
50	0
51	116
52	0
53	60
54	0
55	128
56	0
57	134
58	15
59	0
60	140
61	141
62	146
63	17
64	0
65	0
66	158
67	165
68	84
69	0
70	87
71	176
72	0

[1, 0, 2, 3, 0, 0, 8, 9, 0, 14, 15, 9, 4, 21, 0, 26, 0, 5, 11, 0, 6, 39, 0, 44, 24, 50, 17, 0, 0, 56, 63, 0, 68, 69, 74, 25, 39, 81, 0, 86, 0, 0, 0, 8, 98, 99, 105, 111, 0, 0, 116, 0, 60, 0, 128, 0, 134, 15, 0, 140, 141, 146, 17, 0, 0, 158, 165, 84, 0, 87, 176, 0]

cp's OEIS Frontend

A240658 Least k such that 3^k == -1 (mod prime(n)), or 0 if no such k exists.

Table of values

List of values

n	a(n)
1	1
2	0
3	2
4	3
5	0
6	0
7	8
8	9
9	0
10	14
11	15
12	9
13	4
14	21
15	0
16	26
17	0
18	5
19	11
20	0
21	6
22	39
23	0
24	44
25	24
26	50
27	17
28	0
29	0
30	56
31	63
32	0
33	68
34	69
35	74
36	25
37	39
38	81
39	0
40	86
41	0
42	0
43	0
44	8
45	98
46	99
47	105
48	111
49	0
50	0
51	116
52	0
53	60
54	0
55	128
56	0
57	134
58	15
59	0
60	140
61	141
62	146
63	17
64	0
65	0
66	158
67	165
68	84
69	0
70	87
71	176
72	0

n	a(n)
1	1
2	0
3	2
4	3
5	0
6	0
7	8
8	9
9	0
10	14
11	15
12	9
13	4
14	21
15	0
16	26
17	0
18	5
19	11
20	0
21	6
22	39
23	0
24	44
25	24
26	50
27	17
28	0
29	0
30	56
31	63
32	0
33	68
34	69
35	74
36	25
37	39
38	81
39	0
40	86
41	0
42	0
43	0
44	8
45	98
46	99
47	105
48	111
49	0
50	0
51	116
52	0
53	60
54	0
55	128
56	0
57	134
58	15
59	0
60	140
61	141
62	146
63	17
64	0
65	0
66	158
67	165
68	84
69	0
70	87
71	176
72	0

n	a(n)
1	1
2	0
3	2
4	3
5	0
6	0
7	8
8	9
9	0
10	14
11	15
12	9
13	4
14	21
15	0
16	26
17	0
18	5
19	11
20	0
21	6
22	39
23	0
24	44
25	24
26	50
27	17
28	0
29	0
30	56
31	63
32	0
33	68
34	69
35	74
36	25
37	39
38	81
39	0
40	86
41	0
42	0
43	0
44	8
45	98
46	99
47	105
48	111
49	0
50	0
51	116
52	0
53	60
54	0
55	128
56	0
57	134
58	15
59	0
60	140
61	141
62	146
63	17
64	0
65	0
66	158
67	165
68	84
69	0
70	87
71	176
72	0