A240664 - cp's OEIS frontend

A240664 Least k such that 9^k == -1 (mod prime(n)), or 0 if no such k exists.

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	4
8	0
9	0
10	7
11	0
12	0
13	2
14	0
15	0
16	13
17	0
18	0
19	0
20	0
21	3
22	0
23	0
24	22
25	12
26	25
27	0
28	0
29	0
30	28
31	0
32	0
33	34
34	0
35	37
36	0
37	0
38	0
39	0
40	43
41	0
42	0
43	0
44	4
45	49
46	0
47	0
48	0
49	0
50	0
51	58
52	0
53	30
54	0
55	64
56	0
57	67
58	0
59	0
60	70
61	0
62	73
63	0
64	0
65	0
66	79
67	0
68	42
69	0
70	0
71	88
72	0
73	0
74	0
75	0
76	0
77	97
78	0
79	100
80	51
81	0

[1, 0, 1, 0, 0, 0, 4, 0, 0, 7, 0, 0, 2, 0, 0, 13, 0, 0, 0, 0, 3, 0, 0, 22, 12, 25, 0, 0, 0, 28, 0, 0, 34, 0, 37, 0, 0, 0, 0, 43, 0, 0, 0, 4, 49, 0, 0, 0, 0, 0, 58, 0, 30, 0, 64, 0, 67, 0, 0, 70, 0, 73, 0, 0, 0, 79, 0, 42, 0, 0, 88, 0, 0, 0, 0, 0, 97, 0, 100, 51, 0]

cp's OEIS Frontend

A240664 Least k such that 9^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	1
4	0
5	0
6	0
7	4
8	0
9	0
10	7
11	0
12	0
13	2
14	0
15	0
16	13
17	0
18	0
19	0
20	0
21	3
22	0
23	0
24	22
25	12
26	25
27	0
28	0
29	0
30	28
31	0
32	0
33	34
34	0
35	37
36	0
37	0
38	0
39	0
40	43
41	0
42	0
43	0
44	4
45	49
46	0
47	0
48	0
49	0
50	0
51	58
52	0
53	30
54	0
55	64
56	0
57	67
58	0
59	0
60	70
61	0
62	73
63	0
64	0
65	0
66	79
67	0
68	42
69	0
70	0
71	88
72	0
73	0
74	0
75	0
76	0
77	97
78	0
79	100
80	51
81	0

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	4
8	0
9	0
10	7
11	0
12	0
13	2
14	0
15	0
16	13
17	0
18	0
19	0
20	0
21	3
22	0
23	0
24	22
25	12
26	25
27	0
28	0
29	0
30	28
31	0
32	0
33	34
34	0
35	37
36	0
37	0
38	0
39	0
40	43
41	0
42	0
43	0
44	4
45	49
46	0
47	0
48	0
49	0
50	0
51	58
52	0
53	30
54	0
55	64
56	0
57	67
58	0
59	0
60	70
61	0
62	73
63	0
64	0
65	0
66	79
67	0
68	42
69	0
70	0
71	88
72	0
73	0
74	0
75	0
76	0
77	97
78	0
79	100
80	51
81	0

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	4
8	0
9	0
10	7
11	0
12	0
13	2
14	0
15	0
16	13
17	0
18	0
19	0
20	0
21	3
22	0
23	0
24	22
25	12
26	25
27	0
28	0
29	0
30	28
31	0
32	0
33	34
34	0
35	37
36	0
37	0
38	0
39	0
40	43
41	0
42	0
43	0
44	4
45	49
46	0
47	0
48	0
49	0
50	0
51	58
52	0
53	30
54	0
55	64
56	0
57	67
58	0
59	0
60	70
61	0
62	73
63	0
64	0
65	0
66	79
67	0
68	42
69	0
70	0
71	88
72	0
73	0
74	0
75	0
76	0
77	97
78	0
79	100
80	51
81	0