A296243 - cp's OEIS frontend

A296243 Numbers k such that the multiplicative order of 2 modulo k is even.

n	a(n)
1	3
2	5
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	25
11	27
12	29
13	33
14	35
15	37
16	39
17	41
18	43
19	45
20	51
21	53
22	55
23	57
24	59
25	61
26	63
27	65
28	67
29	69
30	75
31	77
32	81
33	83
34	85
35	87
36	91
37	93
38	95
39	97
40	99
41	101
42	105
43	107
44	109
45	111
46	113
47	115
48	117
49	119
50	121
51	123
52	125
53	129
54	131
55	133
56	135
57	137
58	139
59	141
60	143
61	145
62	147
63	149
64	153

[3, 5, 9, 11, 13, 15, 17, 19, 21, 25, 27, 29, 33, 35, 37, 39, 41, 43, 45, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 75, 77, 81, 83, 85, 87, 91, 93, 95, 97, 99, 101, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 153]

cp's OEIS Frontend

A296243 Numbers k such that the multiplicative order of 2 modulo k is even.

Table of values

List of values

n	a(n)
1	3
2	5
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	25
11	27
12	29
13	33
14	35
15	37
16	39
17	41
18	43
19	45
20	51
21	53
22	55
23	57
24	59
25	61
26	63
27	65
28	67
29	69
30	75
31	77
32	81
33	83
34	85
35	87
36	91
37	93
38	95
39	97
40	99
41	101
42	105
43	107
44	109
45	111
46	113
47	115
48	117
49	119
50	121
51	123
52	125
53	129
54	131
55	133
56	135
57	137
58	139
59	141
60	143
61	145
62	147
63	149
64	153

n	a(n)
1	3
2	5
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	25
11	27
12	29
13	33
14	35
15	37
16	39
17	41
18	43
19	45
20	51
21	53
22	55
23	57
24	59
25	61
26	63
27	65
28	67
29	69
30	75
31	77
32	81
33	83
34	85
35	87
36	91
37	93
38	95
39	97
40	99
41	101
42	105
43	107
44	109
45	111
46	113
47	115
48	117
49	119
50	121
51	123
52	125
53	129
54	131
55	133
56	135
57	137
58	139
59	141
60	143
61	145
62	147
63	149
64	153

n	a(n)
1	3
2	5
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	25
11	27
12	29
13	33
14	35
15	37
16	39
17	41
18	43
19	45
20	51
21	53
22	55
23	57
24	59
25	61
26	63
27	65
28	67
29	69
30	75
31	77
32	81
33	83
34	85
35	87
36	91
37	93
38	95
39	97
40	99
41	101
42	105
43	107
44	109
45	111
46	113
47	115
48	117
49	119
50	121
51	123
52	125
53	129
54	131
55	133
56	135
57	137
58	139
59	141
60	143
61	145
62	147
63	149
64	153