A254761 - cp's OEIS frontend

A254761 One half of the fundamental positive solution y = y1(n) of the first class of the Pell equation x^2 - 2*y^2 = A007519(n), n >= 1 (primes congruent to 1 mod 8).

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

[1, 1, 1, 2, 3, 1, 2, 2, 4, 5, 2, 1, 4, 6, 1, 4, 2, 1, 7, 3, 1, 7, 8, 2, 4, 1, 5, 6, 5, 3, 2, 8, 10, 2, 6, 1, 7, 8, 9, 10, 4, 7, 3, 2, 9, 1, 12, 7, 3, 5]

cp's OEIS Frontend

A254761 One half of the fundamental positive solution y = y1(n) of the first class of the Pell equation x^2 - 2*y^2 = A007519(n), n >= 1 (primes congruent to 1 mod 8).

Table of values

List of values

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

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

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