A330274 - cp's OEIS frontend

A330274 Largest positive x such that (x,x+n) is the smallest pair of quadratic residues with difference n, modulo any prime.

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

[9, 4, 1, 10, 4, 14, 9, 1, 9, 12, 5, 4, 11, 13, 1, 9, 10, 15, 11, 10, 4, 14, 4, 1, 15, 10, 9, 26, 16, 12, 9, 4, 16, 21, 1, 21, 23, 14, 16, 9, 15, 14, 17, 16, 4, 22, 9, 1, 16, 25, 25, 29, 19, 16, 9, 25, 30, 27, 16, 4, 24, 22, 1, 21, 16, 22, 29, 22, 31, 30, 10]

cp's OEIS Frontend

A330274 Largest positive x such that (x,x+n) is the smallest pair of quadratic residues with difference n, modulo any prime.

Table of values

List of values

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

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

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