A082997 - cp's OEIS frontend

A082997 a(n) = card{ x <= n : omega(x) = 2 }.

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

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

cp's OEIS Frontend

A082997 a(n) = card{ x <= n : omega(x) = 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	1
10	2
11	2
12	3
13	3
14	4
15	5
16	5
17	5
18	6
19	6
20	7
21	8
22	9
23	9
24	10
25	10
26	11
27	11
28	12
29	12
30	12
31	12
32	12
33	13
34	14
35	15
36	16
37	16
38	17
39	18
40	19
41	19
42	19
43	19
44	20
45	21
46	22
47	22
48	23
49	23
50	24
51	25
52	26
53	26
54	27
55	28
56	29
57	30
58	31
59	31
60	31
61	31
62	32
63	33
64	33
65	34
66	34
67	34
68	35
69	36
70	36
71	36
72	37
73	37
74	38
75	39
76	40
77	41

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

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