A234716 - cp's OEIS frontend

A234716 Number of odd composite integers k, such that n-1 < k < 2n-2.

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

[0, 0, 0, 0, 0, 1, 1, 1, 2, 1, 1, 2, 2, 3, 4, 3, 3, 4, 5, 5, 6, 5, 5, 6, 6, 6, 7, 6, 7, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 11, 11, 12, 13, 12, 13, 14, 15, 14, 15, 14, 14, 15, 15, 14, 15, 14, 15, 16, 17, 18, 19, 19, 19, 19, 19, 20, 21, 20, 20, 21, 22, 23]

cp's OEIS Frontend

A234716 Number of odd composite integers k, such that n-1 < k < 2n-2.

Table of values

List of values

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

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

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