A167529 - cp's OEIS frontend

A167529 a(n) is the number of nonisolated nonprimes k such that (n-th nonisolated prime) < k < (n-th isolated prime).

n	a(n)
1	0
2	9
3	19
4	22
5	27
6	34
7	42
8	37
9	42
10	41
11	50
12	50
13	53
14	64
15	69
16	49
17	54
18	79
19	90
20	72
21	86
22	82
23	87
24	74
25	86
26	90
27	96
28	106
29	111
30	98
31	103
32	102
33	107
34	88
35	91
36	88
37	95
38	73
39	80
40	73
41	76
42	22
43	29
44	26
45	37
46	21
47	24
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0

[0, 9, 19, 22, 27, 34, 42, 37, 42, 41, 50, 50, 53, 64, 69, 49, 54, 79, 90, 72, 86, 82, 87, 74, 86, 90, 96, 106, 111, 98, 103, 102, 107, 88, 91, 88, 95, 73, 80, 73, 76, 22, 29, 26, 37, 21, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A167529 a(n) is the number of nonisolated nonprimes k such that (n-th nonisolated prime) < k < (n-th isolated prime).

Table of values

List of values

n	a(n)
1	0
2	9
3	19
4	22
5	27
6	34
7	42
8	37
9	42
10	41
11	50
12	50
13	53
14	64
15	69
16	49
17	54
18	79
19	90
20	72
21	86
22	82
23	87
24	74
25	86
26	90
27	96
28	106
29	111
30	98
31	103
32	102
33	107
34	88
35	91
36	88
37	95
38	73
39	80
40	73
41	76
42	22
43	29
44	26
45	37
46	21
47	24
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0

n	a(n)
1	0
2	9
3	19
4	22
5	27
6	34
7	42
8	37
9	42
10	41
11	50
12	50
13	53
14	64
15	69
16	49
17	54
18	79
19	90
20	72
21	86
22	82
23	87
24	74
25	86
26	90
27	96
28	106
29	111
30	98
31	103
32	102
33	107
34	88
35	91
36	88
37	95
38	73
39	80
40	73
41	76
42	22
43	29
44	26
45	37
46	21
47	24
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0

n	a(n)
1	0
2	9
3	19
4	22
5	27
6	34
7	42
8	37
9	42
10	41
11	50
12	50
13	53
14	64
15	69
16	49
17	54
18	79
19	90
20	72
21	86
22	82
23	87
24	74
25	86
26	90
27	96
28	106
29	111
30	98
31	103
32	102
33	107
34	88
35	91
36	88
37	95
38	73
39	80
40	73
41	76
42	22
43	29
44	26
45	37
46	21
47	24
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0