A282029 - cp's OEIS frontend

A282029 a(n) = n - pi(n/2).

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

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

cp's OEIS Frontend

A282029 a(n) = n - pi(n/2).

Table of values

List of values

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

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

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