A146167 - cp's OEIS frontend

A146167 Number of odd squarefree semiprimes (A046388) <= n.

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

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 11]

cp's OEIS Frontend

A146167 Number of odd squarefree semiprimes (A046388) <= n.

Table of values

List of values

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

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

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