A334800 - cp's OEIS frontend

A334800 a(n) is the number of values dp less than n, where d is a divisor of n, p is a prime, and dp is not a divisor of n.

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

[0, 0, 1, 1, 2, 2, 3, 4, 4, 4, 4, 6, 5, 7, 7, 9, 6, 10, 7, 11, 10, 10, 8, 16, 10, 12, 12, 15, 9, 17, 10, 19, 14, 15, 14, 23, 11, 17, 16, 24, 12, 25, 13, 23, 22, 20, 14, 34, 17, 25, 20, 26, 15, 32, 20, 32, 22, 23, 16, 41, 17, 26, 29, 36, 23, 36, 18, 33, 26, 36]

cp's OEIS Frontend

A334800 a(n) is the number of values dp less than n, where d is a divisor of n, p is a prime, and dp is not a divisor of n.

Table of values

List of values

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

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

cp's OEIS Frontend

A334800 a(n) is the number of values d*p less than n, where d is a divisor of n, p is a prime, and d*p is not a divisor of n.

Table of values

List of values

A334800 a(n) is the number of values dp less than n, where d is a divisor of n, p is a prime, and dp is not a divisor of n.

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