A178953 - cp's OEIS frontend

A178953 Indices n such that 2*prime(n) cannot be written as a sum of two distinct prime(n-k) and prime(n+k).

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	14
7	15
8	21
9	22
10	29
11	30
12	35
13	38
14	46
15	48
16	49
17	50
18	52
19	53
20	57
21	58
22	60
23	61
24	62
25	65
26	66
27	90
28	91
29	95
30	96
31	97
32	99
33	114
34	120
35	121
36	122
37	123
38	124
39	125
40	128
41	145
42	146
43	149
44	153
45	154
46	163
47	176
48	179
49	180
50	186
51	187
52	189
53	191
54	192
55	197

[1, 2, 4, 8, 9, 14, 15, 21, 22, 29, 30, 35, 38, 46, 48, 49, 50, 52, 53, 57, 58, 60, 61, 62, 65, 66, 90, 91, 95, 96, 97, 99, 114, 120, 121, 122, 123, 124, 125, 128, 145, 146, 149, 153, 154, 163, 176, 179, 180, 186, 187, 189, 191, 192, 197]

cp's OEIS Frontend

A178953 Indices n such that 2*prime(n) cannot be written as a sum of two distinct prime(n-k) and prime(n+k).

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	14
7	15
8	21
9	22
10	29
11	30
12	35
13	38
14	46
15	48
16	49
17	50
18	52
19	53
20	57
21	58
22	60
23	61
24	62
25	65
26	66
27	90
28	91
29	95
30	96
31	97
32	99
33	114
34	120
35	121
36	122
37	123
38	124
39	125
40	128
41	145
42	146
43	149
44	153
45	154
46	163
47	176
48	179
49	180
50	186
51	187
52	189
53	191
54	192
55	197

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	14
7	15
8	21
9	22
10	29
11	30
12	35
13	38
14	46
15	48
16	49
17	50
18	52
19	53
20	57
21	58
22	60
23	61
24	62
25	65
26	66
27	90
28	91
29	95
30	96
31	97
32	99
33	114
34	120
35	121
36	122
37	123
38	124
39	125
40	128
41	145
42	146
43	149
44	153
45	154
46	163
47	176
48	179
49	180
50	186
51	187
52	189
53	191
54	192
55	197

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	14
7	15
8	21
9	22
10	29
11	30
12	35
13	38
14	46
15	48
16	49
17	50
18	52
19	53
20	57
21	58
22	60
23	61
24	62
25	65
26	66
27	90
28	91
29	95
30	96
31	97
32	99
33	114
34	120
35	121
36	122
37	123
38	124
39	125
40	128
41	145
42	146
43	149
44	153
45	154
46	163
47	176
48	179
49	180
50	186
51	187
52	189
53	191
54	192
55	197