A111981 - cp's OEIS frontend

A111981 Numbers n such that 2n-1 and 2n+3 are consecutive primes.

n	a(n)
1	4
2	7
3	10
4	19
5	22
6	34
7	40
8	49
9	52
10	55
11	64
12	82
13	97
14	112
15	115
16	139
17	154
18	157
19	175
20	190
21	199
22	220
23	229
24	232
25	244
26	250
27	307
28	322
29	337
30	370
31	379
32	385
33	412
34	427
35	430
36	439
37	442
38	454
39	469
40	484
41	505
42	544
43	547
44	607
45	640
46	649
47	652
48	712
49	715
50	724
51	742
52	745
53	775
54	784
55	790

[4, 7, 10, 19, 22, 34, 40, 49, 52, 55, 64, 82, 97, 112, 115, 139, 154, 157, 175, 190, 199, 220, 229, 232, 244, 250, 307, 322, 337, 370, 379, 385, 412, 427, 430, 439, 442, 454, 469, 484, 505, 544, 547, 607, 640, 649, 652, 712, 715, 724, 742, 745, 775, 784, 790]

cp's OEIS Frontend

A111981 Numbers n such that 2n-1 and 2n+3 are consecutive primes.

Table of values

List of values

n	a(n)
1	4
2	7
3	10
4	19
5	22
6	34
7	40
8	49
9	52
10	55
11	64
12	82
13	97
14	112
15	115
16	139
17	154
18	157
19	175
20	190
21	199
22	220
23	229
24	232
25	244
26	250
27	307
28	322
29	337
30	370
31	379
32	385
33	412
34	427
35	430
36	439
37	442
38	454
39	469
40	484
41	505
42	544
43	547
44	607
45	640
46	649
47	652
48	712
49	715
50	724
51	742
52	745
53	775
54	784
55	790

n	a(n)
1	4
2	7
3	10
4	19
5	22
6	34
7	40
8	49
9	52
10	55
11	64
12	82
13	97
14	112
15	115
16	139
17	154
18	157
19	175
20	190
21	199
22	220
23	229
24	232
25	244
26	250
27	307
28	322
29	337
30	370
31	379
32	385
33	412
34	427
35	430
36	439
37	442
38	454
39	469
40	484
41	505
42	544
43	547
44	607
45	640
46	649
47	652
48	712
49	715
50	724
51	742
52	745
53	775
54	784
55	790

n	a(n)
1	4
2	7
3	10
4	19
5	22
6	34
7	40
8	49
9	52
10	55
11	64
12	82
13	97
14	112
15	115
16	139
17	154
18	157
19	175
20	190
21	199
22	220
23	229
24	232
25	244
26	250
27	307
28	322
29	337
30	370
31	379
32	385
33	412
34	427
35	430
36	439
37	442
38	454
39	469
40	484
41	505
42	544
43	547
44	607
45	640
46	649
47	652
48	712
49	715
50	724
51	742
52	745
53	775
54	784
55	790