A002340 - cp's OEIS frontend

A002340 Numbers x such that p = x^2 - 5y^2, where p == 0, 1, or 4 (mod 5).

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

[5, 4, 8, 7, 6, 11, 8, 9, 14, 18, 13, 11, 17, 16, 12, 13, 14, 28, 19, 14, 18, 16, 27, 22, 31, 16, 17, 26, 19, 34, 24, 23, 22, 28, 37, 41, 27, 32, 21, 26, 22, 23, 31, 22, 44, 48, 23, 29, 39, 43, 24, 38, 51, 32, 26, 31, 28, 29, 36, 41, 27, 58, 28]

cp's OEIS Frontend

A002340 Numbers x such that p = x^2 - 5y^2, where p == 0, 1, or 4 (mod 5).

Table of values

List of values

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

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

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