A074259 - cp's OEIS frontend

A074259 Gaps between primes p such that 2p+1 is also prime, i.e., Sophie-Germain primes A005384.

n	a(n)
1	1
2	2
3	6
4	12
5	6
6	12
7	12
8	30
9	6
10	24
11	18
12	42
13	6
14	12
15	42
16	6
17	12
18	30
19	12
20	66
21	60
22	12
23	12
24	48
25	18
26	84
27	48
28	12
29	6
30	24
31	36
32	24
33	18
34	48
35	102
36	42
37	60
38	6
39	12
40	18
41	54
42	120
43	6
44	60
45	120
46	30
47	12
48	30
49	18
50	12
51	48

[1, 2, 6, 12, 6, 12, 12, 30, 6, 24, 18, 42, 6, 12, 42, 6, 12, 30, 12, 66, 60, 12, 12, 48, 18, 84, 48, 12, 6, 24, 36, 24, 18, 48, 102, 42, 60, 6, 12, 18, 54, 120, 6, 60, 120, 30, 12, 30, 18, 12, 48]

cp's OEIS Frontend

A074259 Gaps between primes p such that 2p+1 is also prime, i.e., Sophie-Germain primes A005384.

Table of values

List of values

n	a(n)
1	1
2	2
3	6
4	12
5	6
6	12
7	12
8	30
9	6
10	24
11	18
12	42
13	6
14	12
15	42
16	6
17	12
18	30
19	12
20	66
21	60
22	12
23	12
24	48
25	18
26	84
27	48
28	12
29	6
30	24
31	36
32	24
33	18
34	48
35	102
36	42
37	60
38	6
39	12
40	18
41	54
42	120
43	6
44	60
45	120
46	30
47	12
48	30
49	18
50	12
51	48

n	a(n)
1	1
2	2
3	6
4	12
5	6
6	12
7	12
8	30
9	6
10	24
11	18
12	42
13	6
14	12
15	42
16	6
17	12
18	30
19	12
20	66
21	60
22	12
23	12
24	48
25	18
26	84
27	48
28	12
29	6
30	24
31	36
32	24
33	18
34	48
35	102
36	42
37	60
38	6
39	12
40	18
41	54
42	120
43	6
44	60
45	120
46	30
47	12
48	30
49	18
50	12
51	48

n	a(n)
1	1
2	2
3	6
4	12
5	6
6	12
7	12
8	30
9	6
10	24
11	18
12	42
13	6
14	12
15	42
16	6
17	12
18	30
19	12
20	66
21	60
22	12
23	12
24	48
25	18
26	84
27	48
28	12
29	6
30	24
31	36
32	24
33	18
34	48
35	102
36	42
37	60
38	6
39	12
40	18
41	54
42	120
43	6
44	60
45	120
46	30
47	12
48	30
49	18
50	12
51	48