A120633 - cp's OEIS frontend

A120633 Number of composite numbers bounded inclusively between p(n+1) and 2*p(n) where p(x) is prime(x).

n	a(n)
1	1
2	1
3	3
4	2
5	7
6	7
7	12
8	12
9	13
10	22
11	19
12	25
13	31
14	31
15	33
16	37
17	45
18	44
19	51
20	56
21	55
22	61
23	63
24	66
25	75
26	80
27	81
28	87
29	88
30	82
31	101
32	103
33	111
34	105
35	121
36	120
37	124
38	132
39	134
40	140
41	148
42	142
43	158
44	158
45	164
46	156
47	165
48	182
49	188
50	188
51	189
52	199
53	193
54	205
55	210

[1, 1, 3, 2, 7, 7, 12, 12, 13, 22, 19, 25, 31, 31, 33, 37, 45, 44, 51, 56, 55, 61, 63, 66, 75, 80, 81, 87, 88, 82, 101, 103, 111, 105, 121, 120, 124, 132, 134, 140, 148, 142, 158, 158, 164, 156, 165, 182, 188, 188, 189, 199, 193, 205, 210]

cp's OEIS Frontend

A120633 Number of composite numbers bounded inclusively between p(n+1) and 2*p(n) where p(x) is prime(x).

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	2
5	7
6	7
7	12
8	12
9	13
10	22
11	19
12	25
13	31
14	31
15	33
16	37
17	45
18	44
19	51
20	56
21	55
22	61
23	63
24	66
25	75
26	80
27	81
28	87
29	88
30	82
31	101
32	103
33	111
34	105
35	121
36	120
37	124
38	132
39	134
40	140
41	148
42	142
43	158
44	158
45	164
46	156
47	165
48	182
49	188
50	188
51	189
52	199
53	193
54	205
55	210

n	a(n)
1	1
2	1
3	3
4	2
5	7
6	7
7	12
8	12
9	13
10	22
11	19
12	25
13	31
14	31
15	33
16	37
17	45
18	44
19	51
20	56
21	55
22	61
23	63
24	66
25	75
26	80
27	81
28	87
29	88
30	82
31	101
32	103
33	111
34	105
35	121
36	120
37	124
38	132
39	134
40	140
41	148
42	142
43	158
44	158
45	164
46	156
47	165
48	182
49	188
50	188
51	189
52	199
53	193
54	205
55	210

n	a(n)
1	1
2	1
3	3
4	2
5	7
6	7
7	12
8	12
9	13
10	22
11	19
12	25
13	31
14	31
15	33
16	37
17	45
18	44
19	51
20	56
21	55
22	61
23	63
24	66
25	75
26	80
27	81
28	87
29	88
30	82
31	101
32	103
33	111
34	105
35	121
36	120
37	124
38	132
39	134
40	140
41	148
42	142
43	158
44	158
45	164
46	156
47	165
48	182
49	188
50	188
51	189
52	199
53	193
54	205
55	210