A241419 - cp's OEIS frontend

A241419 Number of numbers m <= n that have a prime divisor greater than sqrt(n) (i.e., A006530(m)>sqrt(n)).

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

[0, 1, 2, 1, 2, 3, 4, 4, 2, 3, 4, 4, 5, 6, 7, 7, 8, 8, 9, 10, 11, 12, 13, 13, 9, 10, 10, 11, 12, 12, 13, 13, 14, 15, 16, 16, 17, 18, 19, 19, 20, 21, 22, 23, 23, 24, 25, 25, 19, 19, 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, 27, 28, 28, 28, 29, 30, 31, 32, 33, 33, 34, 34, 35, 36, 36, 37, 38]

cp's OEIS Frontend

A241419 Number of numbers m <= n that have a prime divisor greater than sqrt(n) (i.e., A006530(m)>sqrt(n)).

Table of values

List of values

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

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

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