A163639 - cp's OEIS frontend

A163639 The count of odd numbers from prime(n) up to the n-th odd nonprime, A014076(n).

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

[1, 4, 6, 8, 8, 8, 9, 9, 9, 9, 10, 8, 8, 8, 9, 7, 6, 8, 6, 6, 7, 5, 5, 3, 2, 2, 2, 3, 4, 3, 5, 6, 8, 8, 11, 10, 12, 12, 13, 15, 17, 15, 19, 18, 19, 18, 22, 27, 27, 27, 26, 28, 28, 32, 32, 32, 34, 34, 36, 37, 36, 40, 46, 47, 47, 47, 51, 52, 56, 54, 55, 57, 60, 61, 63, 63, 65, 67, 68, 69]

cp's OEIS Frontend

A163639 The count of odd numbers from prime(n) up to the n-th odd nonprime, A014076(n).

Table of values

List of values

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

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

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