A052511 - cp's OEIS frontend

A052511 a(n) = prime(n) - 1 - A006218(n).

n	a(n)
1	0
2	-1
3	-1
4	-2
5	0
6	-2
7	0
8	-2
9	-1
10	1
11	1
12	1
13	3
14	1
15	1
16	2
17	6
18	2
19	6
20	4
21	2
22	4
23	6
24	4
25	9
26	9
27	7
28	5
29	5
30	1
31	13
32	11
33	13
34	11
35	17
36	10
37	14
38	16
39	16
40	14
41	18
42	12
43	20
44	16
45	14
46	12
47	22
48	24
49	25
50	21
51	21
52	21
53	21
54	23
55	25
56	23
57	25
58	23
59	27
60	19
61	19
62	25
63	33
64	30
65	28
66	24
67	36
68	36
69	42
70	36
71	38
72	32
73	38
74	40
75	40
76	38
77	40
78	40
79	42
80	40
81	45
82	43

[0, -1, -1, -2, 0, -2, 0, -2, -1, 1, 1, 1, 3, 1, 1, 2, 6, 2, 6, 4, 2, 4, 6, 4, 9, 9, 7, 5, 5, 1, 13, 11, 13, 11, 17, 10, 14, 16, 16, 14, 18, 12, 20, 16, 14, 12, 22, 24, 25, 21, 21, 21, 21, 23, 25, 23, 25, 23, 27, 19, 19, 25, 33, 30, 28, 24, 36, 36, 42, 36, 38, 32, 38, 40, 40, 38, 40, 40, 42, 40, 45, 43]

cp's OEIS Frontend

A052511 a(n) = prime(n) - 1 - A006218(n).

Table of values

List of values

n	a(n)
1	0
2	-1
3	-1
4	-2
5	0
6	-2
7	0
8	-2
9	-1
10	1
11	1
12	1
13	3
14	1
15	1
16	2
17	6
18	2
19	6
20	4
21	2
22	4
23	6
24	4
25	9
26	9
27	7
28	5
29	5
30	1
31	13
32	11
33	13
34	11
35	17
36	10
37	14
38	16
39	16
40	14
41	18
42	12
43	20
44	16
45	14
46	12
47	22
48	24
49	25
50	21
51	21
52	21
53	21
54	23
55	25
56	23
57	25
58	23
59	27
60	19
61	19
62	25
63	33
64	30
65	28
66	24
67	36
68	36
69	42
70	36
71	38
72	32
73	38
74	40
75	40
76	38
77	40
78	40
79	42
80	40
81	45
82	43

n	a(n)
1	0
2	-1
3	-1
4	-2
5	0
6	-2
7	0
8	-2
9	-1
10	1
11	1
12	1
13	3
14	1
15	1
16	2
17	6
18	2
19	6
20	4
21	2
22	4
23	6
24	4
25	9
26	9
27	7
28	5
29	5
30	1
31	13
32	11
33	13
34	11
35	17
36	10
37	14
38	16
39	16
40	14
41	18
42	12
43	20
44	16
45	14
46	12
47	22
48	24
49	25
50	21
51	21
52	21
53	21
54	23
55	25
56	23
57	25
58	23
59	27
60	19
61	19
62	25
63	33
64	30
65	28
66	24
67	36
68	36
69	42
70	36
71	38
72	32
73	38
74	40
75	40
76	38
77	40
78	40
79	42
80	40
81	45
82	43

n	a(n)
1	0
2	-1
3	-1
4	-2
5	0
6	-2
7	0
8	-2
9	-1
10	1
11	1
12	1
13	3
14	1
15	1
16	2
17	6
18	2
19	6
20	4
21	2
22	4
23	6
24	4
25	9
26	9
27	7
28	5
29	5
30	1
31	13
32	11
33	13
34	11
35	17
36	10
37	14
38	16
39	16
40	14
41	18
42	12
43	20
44	16
45	14
46	12
47	22
48	24
49	25
50	21
51	21
52	21
53	21
54	23
55	25
56	23
57	25
58	23
59	27
60	19
61	19
62	25
63	33
64	30
65	28
66	24
67	36
68	36
69	42
70	36
71	38
72	32
73	38
74	40
75	40
76	38
77	40
78	40
79	42
80	40
81	45
82	43