A093003 - cp's OEIS frontend

A093003 Number of composite numbers among next n numbers.

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

[0, 0, 2, 3, 3, 4, 6, 6, 6, 8, 9, 9, 10, 11, 12, 14, 13, 15, 16, 16, 17, 18, 19, 20, 21, 22, 23, 23, 24, 24, 27, 27, 30, 28, 29, 29, 32, 33, 33, 36, 33, 37, 37, 38, 37, 40, 39, 43, 42, 45, 40, 48, 47, 45, 48, 48, 48, 50, 52, 53, 52, 55, 55, 57, 53, 61, 58, 59, 58, 61, 64, 65, 61]

cp's OEIS Frontend

A093003 Number of composite numbers among next n numbers.

Table of values

List of values

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

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

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