A126949 - cp's OEIS frontend

A126949 Moduli n for which -1 is a (nontrivial) power residue for some power greater than 2, i.e., m^k == -1 (mod n) for some k > 1 and some 1 < m < n-1.

n	a(n)
1	5
2	7
3	9
4	10
5	11
6	13
7	14
8	17
9	18
10	19
11	21
12	22
13	23
14	25
15	26
16	27
17	28
18	29
19	31
20	33
21	34
22	35
23	36
24	37
25	38
26	39
27	41
28	42
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	61
45	62
46	63
47	65
48	66
49	67
50	69
51	70
52	71
53	72
54	73
55	74
56	75
57	76
58	77
59	78
60	79
61	81
62	82
63	83
64	84
65	85
66	86
67	87
68	88
69	89
70	90

[5, 7, 9, 10, 11, 13, 14, 17, 18, 19, 21, 22, 23, 25, 26, 27, 28, 29, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 49, 50, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 65, 66, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90]

cp's OEIS Frontend

A126949 Moduli n for which -1 is a (nontrivial) power residue for some power greater than 2, i.e., m^k == -1 (mod n) for some k > 1 and some 1 < m < n-1.

Table of values

List of values

n	a(n)
1	5
2	7
3	9
4	10
5	11
6	13
7	14
8	17
9	18
10	19
11	21
12	22
13	23
14	25
15	26
16	27
17	28
18	29
19	31
20	33
21	34
22	35
23	36
24	37
25	38
26	39
27	41
28	42
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	61
45	62
46	63
47	65
48	66
49	67
50	69
51	70
52	71
53	72
54	73
55	74
56	75
57	76
58	77
59	78
60	79
61	81
62	82
63	83
64	84
65	85
66	86
67	87
68	88
69	89
70	90

n	a(n)
1	5
2	7
3	9
4	10
5	11
6	13
7	14
8	17
9	18
10	19
11	21
12	22
13	23
14	25
15	26
16	27
17	28
18	29
19	31
20	33
21	34
22	35
23	36
24	37
25	38
26	39
27	41
28	42
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	61
45	62
46	63
47	65
48	66
49	67
50	69
51	70
52	71
53	72
54	73
55	74
56	75
57	76
58	77
59	78
60	79
61	81
62	82
63	83
64	84
65	85
66	86
67	87
68	88
69	89
70	90

n	a(n)
1	5
2	7
3	9
4	10
5	11
6	13
7	14
8	17
9	18
10	19
11	21
12	22
13	23
14	25
15	26
16	27
17	28
18	29
19	31
20	33
21	34
22	35
23	36
24	37
25	38
26	39
27	41
28	42
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	61
45	62
46	63
47	65
48	66
49	67
50	69
51	70
52	71
53	72
54	73
55	74
56	75
57	76
58	77
59	78
60	79
61	81
62	82
63	83
64	84
65	85
66	86
67	87
68	88
69	89
70	90