A000224 - cp's OEIS frontend

A000224 Number of squares mod n.

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

[1, 2, 2, 2, 3, 4, 4, 3, 4, 6, 6, 4, 7, 8, 6, 4, 9, 8, 10, 6, 8, 12, 12, 6, 11, 14, 11, 8, 15, 12, 16, 7, 12, 18, 12, 8, 19, 20, 14, 9, 21, 16, 22, 12, 12, 24, 24, 8, 22, 22, 18, 14, 27, 22, 18, 12, 20, 30, 30, 12, 31, 32, 16, 12, 21, 24, 34, 18, 24, 24, 36, 12]

cp's OEIS Frontend

A000224 Number of squares mod n.

Table of values

List of values

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

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

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