A254938 - cp's OEIS frontend

A254938 Fundamental positive solution x = x1(n) of the first class of the Pell equation x^2 - 2*y^2 = -A007522(n), n >= 1 (primes congruent to 7 mod 8).

n	a(n)
1	1
2	3
3	1
4	5
5	1
6	7
7	5
8	1
9	7
10	11
11	3
12	1
13	13
14	7
15	5
16	11
17	9
18	17
19	5
20	3
21	9
22	19
23	7
24	13
25	5
26	3
27	7
28	19
29	13
30	1
31	9
32	25
33	15
34	7
35	23
36	27
37	17
38	9
39	21
40	7
41	1
42	13
43	19
44	11
45	23
46	17
47	31
48	7
49	1
50	33
51	11
52	17
53	7
54	27
55	5
56	35
57	13
58	25
59	19
60	11
61	29
62	9
63	17
64	5
65	3
66	1
67	27
68	21
69	35
70	17
71	23
72	15
73	37
74	41
75	21
76	13
77	19
78	7
79	3
80	23
81	15
82	33
83	13

[1, 3, 1, 5, 1, 7, 5, 1, 7, 11, 3, 1, 13, 7, 5, 11, 9, 17, 5, 3, 9, 19, 7, 13, 5, 3, 7, 19, 13, 1, 9, 25, 15, 7, 23, 27, 17, 9, 21, 7, 1, 13, 19, 11, 23, 17, 31, 7, 1, 33, 11, 17, 7, 27, 5, 35, 13, 25, 19, 11, 29, 9, 17, 5, 3, 1, 27, 21, 35, 17, 23, 15, 37, 41, 21, 13, 19, 7, 3, 23, 15, 33, 13]

cp's OEIS Frontend

A254938 Fundamental positive solution x = x1(n) of the first class of the Pell equation x^2 - 2*y^2 = -A007522(n), n >= 1 (primes congruent to 7 mod 8).

Table of values

List of values

n	a(n)
1	1
2	3
3	1
4	5
5	1
6	7
7	5
8	1
9	7
10	11
11	3
12	1
13	13
14	7
15	5
16	11
17	9
18	17
19	5
20	3
21	9
22	19
23	7
24	13
25	5
26	3
27	7
28	19
29	13
30	1
31	9
32	25
33	15
34	7
35	23
36	27
37	17
38	9
39	21
40	7
41	1
42	13
43	19
44	11
45	23
46	17
47	31
48	7
49	1
50	33
51	11
52	17
53	7
54	27
55	5
56	35
57	13
58	25
59	19
60	11
61	29
62	9
63	17
64	5
65	3
66	1
67	27
68	21
69	35
70	17
71	23
72	15
73	37
74	41
75	21
76	13
77	19
78	7
79	3
80	23
81	15
82	33
83	13

n	a(n)
1	1
2	3
3	1
4	5
5	1
6	7
7	5
8	1
9	7
10	11
11	3
12	1
13	13
14	7
15	5
16	11
17	9
18	17
19	5
20	3
21	9
22	19
23	7
24	13
25	5
26	3
27	7
28	19
29	13
30	1
31	9
32	25
33	15
34	7
35	23
36	27
37	17
38	9
39	21
40	7
41	1
42	13
43	19
44	11
45	23
46	17
47	31
48	7
49	1
50	33
51	11
52	17
53	7
54	27
55	5
56	35
57	13
58	25
59	19
60	11
61	29
62	9
63	17
64	5
65	3
66	1
67	27
68	21
69	35
70	17
71	23
72	15
73	37
74	41
75	21
76	13
77	19
78	7
79	3
80	23
81	15
82	33
83	13

n	a(n)
1	1
2	3
3	1
4	5
5	1
6	7
7	5
8	1
9	7
10	11
11	3
12	1
13	13
14	7
15	5
16	11
17	9
18	17
19	5
20	3
21	9
22	19
23	7
24	13
25	5
26	3
27	7
28	19
29	13
30	1
31	9
32	25
33	15
34	7
35	23
36	27
37	17
38	9
39	21
40	7
41	1
42	13
43	19
44	11
45	23
46	17
47	31
48	7
49	1
50	33
51	11
52	17
53	7
54	27
55	5
56	35
57	13
58	25
59	19
60	11
61	29
62	9
63	17
64	5
65	3
66	1
67	27
68	21
69	35
70	17
71	23
72	15
73	37
74	41
75	21
76	13
77	19
78	7
79	3
80	23
81	15
82	33
83	13