A254765 - cp's OEIS frontend

A254765 Fundamental positive solution y = y1(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	1
3	3
4	1
5	5
6	1
7	3
8	7
9	3
10	1
11	7
12	9
13	1
14	5
15	7
16	3
17	5
18	1
19	9
20	11
21	7
22	1
23	9
24	5
25	11
26	13
27	11
28	3
29	7
30	17
31	11
32	1
33	7
34	13
35	3
36	1
37	7
38	13
39	5
40	15
41	21
42	11
43	7
44	13
45	5
46	9
47	1
48	17
49	23
50	1

[1, 1, 3, 1, 5, 1, 3, 7, 3, 1, 7, 9, 1, 5, 7, 3, 5, 1, 9, 11, 7, 1, 9, 5, 11, 13, 11, 3, 7, 17, 11, 1, 7, 13, 3, 1, 7, 13, 5, 15, 21, 11, 7, 13, 5, 9, 1, 17, 23, 1]

cp's OEIS Frontend

A254765 Fundamental positive solution y = y1(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	1
3	3
4	1
5	5
6	1
7	3
8	7
9	3
10	1
11	7
12	9
13	1
14	5
15	7
16	3
17	5
18	1
19	9
20	11
21	7
22	1
23	9
24	5
25	11
26	13
27	11
28	3
29	7
30	17
31	11
32	1
33	7
34	13
35	3
36	1
37	7
38	13
39	5
40	15
41	21
42	11
43	7
44	13
45	5
46	9
47	1
48	17
49	23
50	1

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	1
7	3
8	7
9	3
10	1
11	7
12	9
13	1
14	5
15	7
16	3
17	5
18	1
19	9
20	11
21	7
22	1
23	9
24	5
25	11
26	13
27	11
28	3
29	7
30	17
31	11
32	1
33	7
34	13
35	3
36	1
37	7
38	13
39	5
40	15
41	21
42	11
43	7
44	13
45	5
46	9
47	1
48	17
49	23
50	1

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	1
7	3
8	7
9	3
10	1
11	7
12	9
13	1
14	5
15	7
16	3
17	5
18	1
19	9
20	11
21	7
22	1
23	9
24	5
25	11
26	13
27	11
28	3
29	7
30	17
31	11
32	1
33	7
34	13
35	3
36	1
37	7
38	13
39	5
40	15
41	21
42	11
43	7
44	13
45	5
46	9
47	1
48	17
49	23
50	1