A255246 - cp's OEIS frontend

A255246 Fundamental positive solution y = y1(n) of the first class of the Pell equation x^2 - 2*y^2 = -A038873(n), n>=1 (primes congruent to {1,2,7} mod 8).

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

[3, 2, 3, 4, 4, 5, 6, 6, 7, 8, 7, 7, 8, 9, 8, 9, 10, 12, 10, 11, 10, 14, 11, 12, 11, 13, 12, 14, 15, 14, 13, 13, 17, 18, 14, 14, 15, 17, 16, 19, 20, 15, 17, 16, 18, 16, 16, 21, 17, 17, 21, 18, 19, 22, 23, 20, 19, 18, 19, 20, 26, 22, 20, 21, 23, 25, 26, 28, 21]

cp's OEIS Frontend

A255246 Fundamental positive solution y = y1(n) of the first class of the Pell equation x^2 - 2*y^2 = -A038873(n), n>=1 (primes congruent to {1,2,7} mod 8).

Table of values

List of values

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

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

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