A308905 - cp's OEIS frontend

A308905 Number of numbers k such that exactly half the numbers in [1..k] are prime(n)-smooth.

n	a(n)
1	2
2	1
3	1
4	4
5	5
6	1
7	4
8	1
9	3
10	1
11	1
12	2
13	1
14	2
15	7
16	1
17	4
18	4
19	3
20	2
21	5
22	3
23	6
24	6
25	1
26	4
27	1
28	3
29	2
30	5
31	3
32	3
33	2
34	2
35	2
36	5
37	4
38	7
39	8
40	7
41	2
42	6
43	5
44	3
45	13
46	10
47	1
48	9
49	2
50	6
51	3
52	2
53	8
54	4
55	4
56	1
57	11
58	3
59	3
60	1
61	7
62	2
63	4
64	1
65	1
66	5
67	4
68	2
69	10
70	5
71	4
72	6
73	9
74	7
75	1
76	3
77	8
78	8
79	6
80	6
81	1
82	3
83	4
84	2
85	2
86	2

[2, 1, 1, 4, 5, 1, 4, 1, 3, 1, 1, 2, 1, 2, 7, 1, 4, 4, 3, 2, 5, 3, 6, 6, 1, 4, 1, 3, 2, 5, 3, 3, 2, 2, 2, 5, 4, 7, 8, 7, 2, 6, 5, 3, 13, 10, 1, 9, 2, 6, 3, 2, 8, 4, 4, 1, 11, 3, 3, 1, 7, 2, 4, 1, 1, 5, 4, 2, 10, 5, 4, 6, 9, 7, 1, 3, 8, 8, 6, 6, 1, 3, 4, 2, 2, 2]

cp's OEIS Frontend

A308905 Number of numbers k such that exactly half the numbers in [1..k] are prime(n)-smooth.

Table of values

List of values

n	a(n)
1	2
2	1
3	1
4	4
5	5
6	1
7	4
8	1
9	3
10	1
11	1
12	2
13	1
14	2
15	7
16	1
17	4
18	4
19	3
20	2
21	5
22	3
23	6
24	6
25	1
26	4
27	1
28	3
29	2
30	5
31	3
32	3
33	2
34	2
35	2
36	5
37	4
38	7
39	8
40	7
41	2
42	6
43	5
44	3
45	13
46	10
47	1
48	9
49	2
50	6
51	3
52	2
53	8
54	4
55	4
56	1
57	11
58	3
59	3
60	1
61	7
62	2
63	4
64	1
65	1
66	5
67	4
68	2
69	10
70	5
71	4
72	6
73	9
74	7
75	1
76	3
77	8
78	8
79	6
80	6
81	1
82	3
83	4
84	2
85	2
86	2

n	a(n)
1	2
2	1
3	1
4	4
5	5
6	1
7	4
8	1
9	3
10	1
11	1
12	2
13	1
14	2
15	7
16	1
17	4
18	4
19	3
20	2
21	5
22	3
23	6
24	6
25	1
26	4
27	1
28	3
29	2
30	5
31	3
32	3
33	2
34	2
35	2
36	5
37	4
38	7
39	8
40	7
41	2
42	6
43	5
44	3
45	13
46	10
47	1
48	9
49	2
50	6
51	3
52	2
53	8
54	4
55	4
56	1
57	11
58	3
59	3
60	1
61	7
62	2
63	4
64	1
65	1
66	5
67	4
68	2
69	10
70	5
71	4
72	6
73	9
74	7
75	1
76	3
77	8
78	8
79	6
80	6
81	1
82	3
83	4
84	2
85	2
86	2

n	a(n)
1	2
2	1
3	1
4	4
5	5
6	1
7	4
8	1
9	3
10	1
11	1
12	2
13	1
14	2
15	7
16	1
17	4
18	4
19	3
20	2
21	5
22	3
23	6
24	6
25	1
26	4
27	1
28	3
29	2
30	5
31	3
32	3
33	2
34	2
35	2
36	5
37	4
38	7
39	8
40	7
41	2
42	6
43	5
44	3
45	13
46	10
47	1
48	9
49	2
50	6
51	3
52	2
53	8
54	4
55	4
56	1
57	11
58	3
59	3
60	1
61	7
62	2
63	4
64	1
65	1
66	5
67	4
68	2
69	10
70	5
71	4
72	6
73	9
74	7
75	1
76	3
77	8
78	8
79	6
80	6
81	1
82	3
83	4
84	2
85	2
86	2