A179003 - cp's OEIS frontend

A179003 Numbers k such that 2^(2k-1) mod (2k+1) is prime.

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	10
7	16
8	18
9	19
10	25
11	28
12	30
13	31
14	34
15	36
16	37
17	38
18	43
19	46
20	49
21	52
22	55
23	58
24	61
25	64
26	67
27	70
28	78
29	79
30	87
31	88
32	91
33	96
34	97
35	100
36	106
37	107
38	109
39	112
40	115
41	118
42	124
43	126
44	133
45	138
46	145
47	147
48	148
49	151
50	154
51	156
52	157
53	160
54	163
55	169
56	180

[1, 2, 4, 6, 7, 10, 16, 18, 19, 25, 28, 30, 31, 34, 36, 37, 38, 43, 46, 49, 52, 55, 58, 61, 64, 67, 70, 78, 79, 87, 88, 91, 96, 97, 100, 106, 107, 109, 112, 115, 118, 124, 126, 133, 138, 145, 147, 148, 151, 154, 156, 157, 160, 163, 169, 180]

cp's OEIS Frontend

A179003 Numbers k such that 2^(2k-1) mod (2k+1) is prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	10
7	16
8	18
9	19
10	25
11	28
12	30
13	31
14	34
15	36
16	37
17	38
18	43
19	46
20	49
21	52
22	55
23	58
24	61
25	64
26	67
27	70
28	78
29	79
30	87
31	88
32	91
33	96
34	97
35	100
36	106
37	107
38	109
39	112
40	115
41	118
42	124
43	126
44	133
45	138
46	145
47	147
48	148
49	151
50	154
51	156
52	157
53	160
54	163
55	169
56	180

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	10
7	16
8	18
9	19
10	25
11	28
12	30
13	31
14	34
15	36
16	37
17	38
18	43
19	46
20	49
21	52
22	55
23	58
24	61
25	64
26	67
27	70
28	78
29	79
30	87
31	88
32	91
33	96
34	97
35	100
36	106
37	107
38	109
39	112
40	115
41	118
42	124
43	126
44	133
45	138
46	145
47	147
48	148
49	151
50	154
51	156
52	157
53	160
54	163
55	169
56	180

cp's OEIS Frontend

A179003 Numbers k such that 2^(2*k-1) mod (2*k+1) is prime.

Table of values

List of values

A179003 Numbers k such that 2^(2k-1) mod (2k+1) is prime.

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	10
7	16
8	18
9	19
10	25
11	28
12	30
13	31
14	34
15	36
16	37
17	38
18	43
19	46
20	49
21	52
22	55
23	58
24	61
25	64
26	67
27	70
28	78
29	79
30	87
31	88
32	91
33	96
34	97
35	100
36	106
37	107
38	109
39	112
40	115
41	118
42	124
43	126
44	133
45	138
46	145
47	147
48	148
49	151
50	154
51	156
52	157
53	160
54	163
55	169
56	180