A254930 - cp's OEIS frontend

A254930 Fundamental positive solution x = x2(n) of the second class of the Pell equation x^2 - 2*y^2 = A001132(n), n >= 1 (primes congruent to 1 or 7 mod 8).

n	a(n)
1	5
2	7
3	11
4	9
5	13
6	17
7	13
8	19
9	23
10	17
11	15
12	21
13	25
14	17
15	23
16	27
17	35
18	23
19	29
20	21
21	41
22	25
23	31
24	23
25	35
26	29
27	39
28	43
29	37
30	31
31	27
32	49
33	53
34	33
35	31
36	37
37	47
38	41
39	55
40	59
41	31
42	45
43	39
44	49
45	37
46	35
47	61
48	37
49	35

[5, 7, 11, 9, 13, 17, 13, 19, 23, 17, 15, 21, 25, 17, 23, 27, 35, 23, 29, 21, 41, 25, 31, 23, 35, 29, 39, 43, 37, 31, 27, 49, 53, 33, 31, 37, 47, 41, 55, 59, 31, 45, 39, 49, 37, 35, 61, 37, 35]

cp's OEIS Frontend

A254930 Fundamental positive solution x = x2(n) of the second class of the Pell equation x^2 - 2*y^2 = A001132(n), n >= 1 (primes congruent to 1 or 7 mod 8).

Table of values

List of values

n	a(n)
1	5
2	7
3	11
4	9
5	13
6	17
7	13
8	19
9	23
10	17
11	15
12	21
13	25
14	17
15	23
16	27
17	35
18	23
19	29
20	21
21	41
22	25
23	31
24	23
25	35
26	29
27	39
28	43
29	37
30	31
31	27
32	49
33	53
34	33
35	31
36	37
37	47
38	41
39	55
40	59
41	31
42	45
43	39
44	49
45	37
46	35
47	61
48	37
49	35

n	a(n)
1	5
2	7
3	11
4	9
5	13
6	17
7	13
8	19
9	23
10	17
11	15
12	21
13	25
14	17
15	23
16	27
17	35
18	23
19	29
20	21
21	41
22	25
23	31
24	23
25	35
26	29
27	39
28	43
29	37
30	31
31	27
32	49
33	53
34	33
35	31
36	37
37	47
38	41
39	55
40	59
41	31
42	45
43	39
44	49
45	37
46	35
47	61
48	37
49	35

n	a(n)
1	5
2	7
3	11
4	9
5	13
6	17
7	13
8	19
9	23
10	17
11	15
12	21
13	25
14	17
15	23
16	27
17	35
18	23
19	29
20	21
21	41
22	25
23	31
24	23
25	35
26	29
27	39
28	43
29	37
30	31
31	27
32	49
33	53
34	33
35	31
36	37
37	47
38	41
39	55
40	59
41	31
42	45
43	39
44	49
45	37
46	35
47	61
48	37
49	35