A237598 - cp's OEIS frontend

A237598 a(n) = |{0 < k < prime(n): pi(k*n) is a square}|, where pi(.) is given by A000720.

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

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

cp's OEIS Frontend

A237598 a(n) = |{0 < k < prime(n): pi(k*n) is a square}|, where pi(.) is given by A000720.

Table of values

List of values

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

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

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