A295164 - cp's OEIS frontend

A295164 Number of squarefree 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	9
21	10
22	11
23	12
24	12
25	9
26	10
27	10
28	10
29	11
30	11
31	12
32	12
33	13
34	14
35	15
36	15
37	16
38	17
39	18
40	18
41	19
42	20
43	21
44	21
45	21
46	22
47	23
48	23
49	18
50	18
51	19
52	19
53	20
54	20
55	21
56	21
57	22
58	23
59	24
60	24
61	25
62	26
63	26
64	26
65	27
66	28
67	29
68	29
69	30
70	30
71	31
72	31
73	32
74	33
75	33
76	33
77	34
78	35
79	36
80	36
81	36
82	37
83	38
84	38
85	39
86	40
87	41
88	41
89	42
90	42
91	43
92	43
93	44
94	45
95	46
96	46
97	47
98	47
99	47
100	47

[0, 1, 2, 1, 2, 3, 4, 4, 2, 3, 4, 4, 5, 6, 7, 7, 8, 8, 9, 9, 10, 11, 12, 12, 9, 10, 10, 10, 11, 11, 12, 12, 13, 14, 15, 15, 16, 17, 18, 18, 19, 20, 21, 21, 21, 22, 23, 23, 18, 18, 19, 19, 20, 20, 21, 21, 22, 23, 24, 24, 25, 26, 26, 26, 27, 28, 29, 29, 30, 30, 31, 31, 32, 33, 33, 33, 34, 35, 36, 36, 36, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43, 43, 44, 45, 46, 46, 47, 47, 47, 47]

cp's OEIS Frontend

A295164 Number of squarefree 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	9
21	10
22	11
23	12
24	12
25	9
26	10
27	10
28	10
29	11
30	11
31	12
32	12
33	13
34	14
35	15
36	15
37	16
38	17
39	18
40	18
41	19
42	20
43	21
44	21
45	21
46	22
47	23
48	23
49	18
50	18
51	19
52	19
53	20
54	20
55	21
56	21
57	22
58	23
59	24
60	24
61	25
62	26
63	26
64	26
65	27
66	28
67	29
68	29
69	30
70	30
71	31
72	31
73	32
74	33
75	33
76	33
77	34
78	35
79	36
80	36
81	36
82	37
83	38
84	38
85	39
86	40
87	41
88	41
89	42
90	42
91	43
92	43
93	44
94	45
95	46
96	46
97	47
98	47
99	47
100	47

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	9
21	10
22	11
23	12
24	12
25	9
26	10
27	10
28	10
29	11
30	11
31	12
32	12
33	13
34	14
35	15
36	15
37	16
38	17
39	18
40	18
41	19
42	20
43	21
44	21
45	21
46	22
47	23
48	23
49	18
50	18
51	19
52	19
53	20
54	20
55	21
56	21
57	22
58	23
59	24
60	24
61	25
62	26
63	26
64	26
65	27
66	28
67	29
68	29
69	30
70	30
71	31
72	31
73	32
74	33
75	33
76	33
77	34
78	35
79	36
80	36
81	36
82	37
83	38
84	38
85	39
86	40
87	41
88	41
89	42
90	42
91	43
92	43
93	44
94	45
95	46
96	46
97	47
98	47
99	47
100	47

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	9
21	10
22	11
23	12
24	12
25	9
26	10
27	10
28	10
29	11
30	11
31	12
32	12
33	13
34	14
35	15
36	15
37	16
38	17
39	18
40	18
41	19
42	20
43	21
44	21
45	21
46	22
47	23
48	23
49	18
50	18
51	19
52	19
53	20
54	20
55	21
56	21
57	22
58	23
59	24
60	24
61	25
62	26
63	26
64	26
65	27
66	28
67	29
68	29
69	30
70	30
71	31
72	31
73	32
74	33
75	33
76	33
77	34
78	35
79	36
80	36
81	36
82	37
83	38
84	38
85	39
86	40
87	41
88	41
89	42
90	42
91	43
92	43
93	44
94	45
95	46
96	46
97	47
98	47
99	47
100	47