A254764 - cp's OEIS frontend

A254764 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	3
2	5
3	7
4	7
5	11
6	9
7	11
8	15
9	13
10	13
11	17
12	19
13	15
14	17
15	19
16	17
17	19
18	19
19	23
20	25
21	23
22	21
23	25
24	23
25	27
26	29
27	29
28	25
29	27
30	35
31	31
32	27
33	29
34	33
35	29
36	29
37	31
38	35
39	31
40	37
41	43
42	35
43	33
44	37
45	33
46	35
47	33
48	41
49	47
50	35

[3, 5, 7, 7, 11, 9, 11, 15, 13, 13, 17, 19, 15, 17, 19, 17, 19, 19, 23, 25, 23, 21, 25, 23, 27, 29, 29, 25, 27, 35, 31, 27, 29, 33, 29, 29, 31, 35, 31, 37, 43, 35, 33, 37, 33, 35, 33, 41, 47, 35]

cp's OEIS Frontend

A254764 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	3
2	5
3	7
4	7
5	11
6	9
7	11
8	15
9	13
10	13
11	17
12	19
13	15
14	17
15	19
16	17
17	19
18	19
19	23
20	25
21	23
22	21
23	25
24	23
25	27
26	29
27	29
28	25
29	27
30	35
31	31
32	27
33	29
34	33
35	29
36	29
37	31
38	35
39	31
40	37
41	43
42	35
43	33
44	37
45	33
46	35
47	33
48	41
49	47
50	35

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

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