A365788 - cp's OEIS frontend

A365788 a(n) = number of k <= n such that rad(k) | n but rad(k) != rad(n).

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	5
11	1
12	6
13	1
14	5
15	4
16	1
17	1
18	7
19	1
20	6
21	4
22	6
23	1
24	7
25	1
26	6
27	1
28	6
29	1
30	17
31	1
32	1
33	5
34	7
35	4
36	9
37	1
38	7
39	5
40	8
41	1
42	18
43	1
44	7
45	6
46	7
47	1
48	9
49	1
50	8
51	5
52	7
53	1
54	9
55	4
56	8
57	5
58	7
59	1
60	24
61	1
62	7
63	6
64	1
65	4
66	21
67	1
68	8
69	5
70	19
71	1
72	10
73	1
74	8
75	6
76	8
77	4
78	22
79	1
80	9
81	1
82	8
83	1
84	26
85	4

[0, 1, 1, 1, 1, 4, 1, 1, 1, 5, 1, 6, 1, 5, 4, 1, 1, 7, 1, 6, 4, 6, 1, 7, 1, 6, 1, 6, 1, 17, 1, 1, 5, 7, 4, 9, 1, 7, 5, 8, 1, 18, 1, 7, 6, 7, 1, 9, 1, 8, 5, 7, 1, 9, 4, 8, 5, 7, 1, 24, 1, 7, 6, 1, 4, 21, 1, 8, 5, 19, 1, 10, 1, 8, 6, 8, 4, 22, 1, 9, 1, 8, 1, 26, 4]

cp's OEIS Frontend

A365788 a(n) = number of k <= n such that rad(k) | n but rad(k) != rad(n).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	5
11	1
12	6
13	1
14	5
15	4
16	1
17	1
18	7
19	1
20	6
21	4
22	6
23	1
24	7
25	1
26	6
27	1
28	6
29	1
30	17
31	1
32	1
33	5
34	7
35	4
36	9
37	1
38	7
39	5
40	8
41	1
42	18
43	1
44	7
45	6
46	7
47	1
48	9
49	1
50	8
51	5
52	7
53	1
54	9
55	4
56	8
57	5
58	7
59	1
60	24
61	1
62	7
63	6
64	1
65	4
66	21
67	1
68	8
69	5
70	19
71	1
72	10
73	1
74	8
75	6
76	8
77	4
78	22
79	1
80	9
81	1
82	8
83	1
84	26
85	4

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	5
11	1
12	6
13	1
14	5
15	4
16	1
17	1
18	7
19	1
20	6
21	4
22	6
23	1
24	7
25	1
26	6
27	1
28	6
29	1
30	17
31	1
32	1
33	5
34	7
35	4
36	9
37	1
38	7
39	5
40	8
41	1
42	18
43	1
44	7
45	6
46	7
47	1
48	9
49	1
50	8
51	5
52	7
53	1
54	9
55	4
56	8
57	5
58	7
59	1
60	24
61	1
62	7
63	6
64	1
65	4
66	21
67	1
68	8
69	5
70	19
71	1
72	10
73	1
74	8
75	6
76	8
77	4
78	22
79	1
80	9
81	1
82	8
83	1
84	26
85	4

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	5
11	1
12	6
13	1
14	5
15	4
16	1
17	1
18	7
19	1
20	6
21	4
22	6
23	1
24	7
25	1
26	6
27	1
28	6
29	1
30	17
31	1
32	1
33	5
34	7
35	4
36	9
37	1
38	7
39	5
40	8
41	1
42	18
43	1
44	7
45	6
46	7
47	1
48	9
49	1
50	8
51	5
52	7
53	1
54	9
55	4
56	8
57	5
58	7
59	1
60	24
61	1
62	7
63	6
64	1
65	4
66	21
67	1
68	8
69	5
70	19
71	1
72	10
73	1
74	8
75	6
76	8
77	4
78	22
79	1
80	9
81	1
82	8
83	1
84	26
85	4