A137169 - cp's OEIS frontend

A137169 a(0) = 2; for n>0, a(n) = smallest number m > a(n-1) such that both m-n and m+n are primes.

n	a(n)
0	2
1	4
2	5
3	8
4	9
5	12
6	13
7	24
8	39
9	50
10	51
11	72
12	85
13	96
14	117
15	122
16	123
17	156
18	175
19	192
20	213
21	218
22	219
23	234
24	247
25	252
26	255
27	256
28	279
29	360
30	367
31	378
32	399
33	400
34	423
35	432
36	455
37	486
38	525
39	530
40	531
41	612
42	619
43	630
44	657
45	664
46	687
47	774
48	775
49	810
50	837
51	860
52	915
53	930
54	937
55	942

[2, 4, 5, 8, 9, 12, 13, 24, 39, 50, 51, 72, 85, 96, 117, 122, 123, 156, 175, 192, 213, 218, 219, 234, 247, 252, 255, 256, 279, 360, 367, 378, 399, 400, 423, 432, 455, 486, 525, 530, 531, 612, 619, 630, 657, 664, 687, 774, 775, 810, 837, 860, 915, 930, 937, 942]

cp's OEIS Frontend

A137169 a(0) = 2; for n>0, a(n) = smallest number m > a(n-1) such that both m-n and m+n are primes.

Table of values

List of values

n	a(n)
0	2
1	4
2	5
3	8
4	9
5	12
6	13
7	24
8	39
9	50
10	51
11	72
12	85
13	96
14	117
15	122
16	123
17	156
18	175
19	192
20	213
21	218
22	219
23	234
24	247
25	252
26	255
27	256
28	279
29	360
30	367
31	378
32	399
33	400
34	423
35	432
36	455
37	486
38	525
39	530
40	531
41	612
42	619
43	630
44	657
45	664
46	687
47	774
48	775
49	810
50	837
51	860
52	915
53	930
54	937
55	942

n	a(n)
0	2
1	4
2	5
3	8
4	9
5	12
6	13
7	24
8	39
9	50
10	51
11	72
12	85
13	96
14	117
15	122
16	123
17	156
18	175
19	192
20	213
21	218
22	219
23	234
24	247
25	252
26	255
27	256
28	279
29	360
30	367
31	378
32	399
33	400
34	423
35	432
36	455
37	486
38	525
39	530
40	531
41	612
42	619
43	630
44	657
45	664
46	687
47	774
48	775
49	810
50	837
51	860
52	915
53	930
54	937
55	942

n	a(n)
0	2
1	4
2	5
3	8
4	9
5	12
6	13
7	24
8	39
9	50
10	51
11	72
12	85
13	96
14	117
15	122
16	123
17	156
18	175
19	192
20	213
21	218
22	219
23	234
24	247
25	252
26	255
27	256
28	279
29	360
30	367
31	378
32	399
33	400
34	423
35	432
36	455
37	486
38	525
39	530
40	531
41	612
42	619
43	630
44	657
45	664
46	687
47	774
48	775
49	810
50	837
51	860
52	915
53	930
54	937
55	942