A260960 - cp's OEIS frontend

A260960 Least positive integer k < prime(n) such that there are 0 < i < j with i^2 + j^2 = k^2 for which (i*j)/2 is a primitive root modulo prime(n), or 0 if no such k exists.

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

[0, 0, 0, 0, 5, 5, 5, 17, 13, 17, 10, 10, 5, 13, 13, 25, 5, 5, 39, 25, 17, 5, 5, 5, 17, 29, 5, 5, 5, 5, 5, 5, 5, 34, 17, 5, 5, 26, 13, 13, 5, 10, 29, 13, 13, 5, 34, 5, 5, 5, 5, 25, 25, 5, 5, 13, 17, 5, 5, 10, 29, 13, 13, 61, 17, 13, 17, 17, 5, 13]

cp's OEIS Frontend

A260960 Least positive integer k < prime(n) such that there are 0 < i < j with i^2 + j^2 = k^2 for which (i*j)/2 is a primitive root modulo prime(n), or 0 if no such k exists.

Table of values

List of values

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

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

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