A377842 - cp's OEIS frontend

A377842 a(n) = q - 2p, where q is the greatest prime such that p=2n - q is also prime.

n	a(n)
2	-2
3	-3
4	-1
5	1
6	-3
7	5
8	7
9	3
10	11
11	13
12	9
13	17
14	13
15	9
16	23
17	25
18	21
19	17
20	31
21	27
22	35
23	37
24	33
25	41
26	37
27	33
28	47
29	43
30	39
31	53
32	55
33	51
34	47
35	61
36	57
37	65
38	67
39	63
40	59
41	73
42	69
43	77
44	73
45	69
46	83
47	79
48	75
49	41
50	91
51	87
52	95
53	97
54	93
55	101
56	103
57	99
58	107
59	103
60	99
61	83
62	91
63	87
64	71
65	121
66	117
67	125
68	121
69	117
70	131
71	133

[-2, -3, -1, 1, -3, 5, 7, 3, 11, 13, 9, 17, 13, 9, 23, 25, 21, 17, 31, 27, 35, 37, 33, 41, 37, 33, 47, 43, 39, 53, 55, 51, 47, 61, 57, 65, 67, 63, 59, 73, 69, 77, 73, 69, 83, 79, 75, 41, 91, 87, 95, 97, 93, 101, 103, 99, 107, 103, 99, 83, 91, 87, 71, 121, 117, 125, 121, 117, 131, 133]

cp's OEIS Frontend

A377842 a(n) = q - 2p, where q is the greatest prime such that p=2n - q is also prime.

Table of values

List of values

n	a(n)
2	-2
3	-3
4	-1
5	1
6	-3
7	5
8	7
9	3
10	11
11	13
12	9
13	17
14	13
15	9
16	23
17	25
18	21
19	17
20	31
21	27
22	35
23	37
24	33
25	41
26	37
27	33
28	47
29	43
30	39
31	53
32	55
33	51
34	47
35	61
36	57
37	65
38	67
39	63
40	59
41	73
42	69
43	77
44	73
45	69
46	83
47	79
48	75
49	41
50	91
51	87
52	95
53	97
54	93
55	101
56	103
57	99
58	107
59	103
60	99
61	83
62	91
63	87
64	71
65	121
66	117
67	125
68	121
69	117
70	131
71	133

n	a(n)
2	-2
3	-3
4	-1
5	1
6	-3
7	5
8	7
9	3
10	11
11	13
12	9
13	17
14	13
15	9
16	23
17	25
18	21
19	17
20	31
21	27
22	35
23	37
24	33
25	41
26	37
27	33
28	47
29	43
30	39
31	53
32	55
33	51
34	47
35	61
36	57
37	65
38	67
39	63
40	59
41	73
42	69
43	77
44	73
45	69
46	83
47	79
48	75
49	41
50	91
51	87
52	95
53	97
54	93
55	101
56	103
57	99
58	107
59	103
60	99
61	83
62	91
63	87
64	71
65	121
66	117
67	125
68	121
69	117
70	131
71	133

cp's OEIS Frontend

A377842 a(n) = q - 2*p, where q is the greatest prime such that p=2*n - q is also prime.

Table of values

List of values

A377842 a(n) = q - 2p, where q is the greatest prime such that p=2n - q is also prime.

n	a(n)
2	-2
3	-3
4	-1
5	1
6	-3
7	5
8	7
9	3
10	11
11	13
12	9
13	17
14	13
15	9
16	23
17	25
18	21
19	17
20	31
21	27
22	35
23	37
24	33
25	41
26	37
27	33
28	47
29	43
30	39
31	53
32	55
33	51
34	47
35	61
36	57
37	65
38	67
39	63
40	59
41	73
42	69
43	77
44	73
45	69
46	83
47	79
48	75
49	41
50	91
51	87
52	95
53	97
54	93
55	101
56	103
57	99
58	107
59	103
60	99
61	83
62	91
63	87
64	71
65	121
66	117
67	125
68	121
69	117
70	131
71	133