A074766 - cp's OEIS frontend

A074766 a(n) = prime(2n) - 2*prime(n) - n.

n	a(n)
1	-2
2	-1
3	0
4	1
5	2
6	5
7	2
8	7
9	6
10	3
11	6
12	3
13	6
14	7
15	4
16	9
17	4
18	11
19	10
20	11
21	14
22	13
23	10
24	21
25	10
26	11
27	18
28	21
29	24
30	25
31	8
32	17
33	10
34	25
35	16
36	21
37	22
38	19
39	24
40	23
41	22
42	29
43	18
44	27
45	24
46	35
47	22
48	9
49	18
50	33
51	40
52	39
53	42
54	37
55	32
56	31
57	24
58	41
59	34
60	37
61	46
62	35
63	24
64	33
65	42
66	43
67	28
68	27
69	24
70	41
71	44
72	37
73	32
74	37
75	30
76	39
77	32

[-2, -1, 0, 1, 2, 5, 2, 7, 6, 3, 6, 3, 6, 7, 4, 9, 4, 11, 10, 11, 14, 13, 10, 21, 10, 11, 18, 21, 24, 25, 8, 17, 10, 25, 16, 21, 22, 19, 24, 23, 22, 29, 18, 27, 24, 35, 22, 9, 18, 33, 40, 39, 42, 37, 32, 31, 24, 41, 34, 37, 46, 35, 24, 33, 42, 43, 28, 27, 24, 41, 44, 37, 32, 37, 30, 39, 32]

cp's OEIS Frontend

A074766 a(n) = prime(2n) - 2*prime(n) - n.

Table of values

List of values

n	a(n)
1	-2
2	-1
3	0
4	1
5	2
6	5
7	2
8	7
9	6
10	3
11	6
12	3
13	6
14	7
15	4
16	9
17	4
18	11
19	10
20	11
21	14
22	13
23	10
24	21
25	10
26	11
27	18
28	21
29	24
30	25
31	8
32	17
33	10
34	25
35	16
36	21
37	22
38	19
39	24
40	23
41	22
42	29
43	18
44	27
45	24
46	35
47	22
48	9
49	18
50	33
51	40
52	39
53	42
54	37
55	32
56	31
57	24
58	41
59	34
60	37
61	46
62	35
63	24
64	33
65	42
66	43
67	28
68	27
69	24
70	41
71	44
72	37
73	32
74	37
75	30
76	39
77	32

n	a(n)
1	-2
2	-1
3	0
4	1
5	2
6	5
7	2
8	7
9	6
10	3
11	6
12	3
13	6
14	7
15	4
16	9
17	4
18	11
19	10
20	11
21	14
22	13
23	10
24	21
25	10
26	11
27	18
28	21
29	24
30	25
31	8
32	17
33	10
34	25
35	16
36	21
37	22
38	19
39	24
40	23
41	22
42	29
43	18
44	27
45	24
46	35
47	22
48	9
49	18
50	33
51	40
52	39
53	42
54	37
55	32
56	31
57	24
58	41
59	34
60	37
61	46
62	35
63	24
64	33
65	42
66	43
67	28
68	27
69	24
70	41
71	44
72	37
73	32
74	37
75	30
76	39
77	32

n	a(n)
1	-2
2	-1
3	0
4	1
5	2
6	5
7	2
8	7
9	6
10	3
11	6
12	3
13	6
14	7
15	4
16	9
17	4
18	11
19	10
20	11
21	14
22	13
23	10
24	21
25	10
26	11
27	18
28	21
29	24
30	25
31	8
32	17
33	10
34	25
35	16
36	21
37	22
38	19
39	24
40	23
41	22
42	29
43	18
44	27
45	24
46	35
47	22
48	9
49	18
50	33
51	40
52	39
53	42
54	37
55	32
56	31
57	24
58	41
59	34
60	37
61	46
62	35
63	24
64	33
65	42
66	43
67	28
68	27
69	24
70	41
71	44
72	37
73	32
74	37
75	30
76	39
77	32