A309680 - cp's OEIS frontend

A309680 The smallest nonsquare nonzero integer that is a quadratic residue modulo n, or 0 if no such integer exists.

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

[0, 0, 0, 0, 0, 3, 2, 0, 7, 5, 3, 0, 3, 2, 6, 0, 2, 7, 5, 5, 7, 3, 2, 12, 6, 3, 7, 8, 5, 6, 2, 17, 3, 2, 11, 13, 3, 5, 3, 20, 2, 7, 6, 5, 10, 2, 2, 33, 2, 6, 13, 12, 6, 7, 5, 8, 6, 5, 3, 21, 3, 2, 7, 17, 10, 3, 6, 8, 3, 11, 2, 28, 2, 3, 6, 5, 11, 3, 2, 20, 7]

cp's OEIS Frontend

A309680 The smallest nonsquare nonzero integer that is a quadratic residue modulo n, or 0 if no such integer exists.

Table of values

List of values

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

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

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