A088964 - cp's OEIS frontend

A088964 Number of solutions to x^2 == 2y^2 (mod n).

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	13
8	8
9	9
10	2
11	1
12	4
13	1
14	26
15	1
16	16
17	33
18	18
19	1
20	4
21	13
22	2
23	45
24	8
25	25
26	2
27	9
28	52
29	1
30	2
31	61
32	32
33	1
34	66
35	13
36	36
37	1
38	2
39	1
40	8
41	81
42	26
43	1
44	4
45	9
46	90
47	93
48	16
49	133
50	50
51	33
52	4
53	1
54	18
55	1
56	104
57	1
58	2
59	1
60	4
61	1
62	122
63	117
64	64
65	1
66	2
67	1
68	132
69	45
70	26

[1, 2, 1, 4, 1, 2, 13, 8, 9, 2, 1, 4, 1, 26, 1, 16, 33, 18, 1, 4, 13, 2, 45, 8, 25, 2, 9, 52, 1, 2, 61, 32, 1, 66, 13, 36, 1, 2, 1, 8, 81, 26, 1, 4, 9, 90, 93, 16, 133, 50, 33, 4, 1, 18, 1, 104, 1, 2, 1, 4, 1, 122, 117, 64, 1, 2, 1, 132, 45, 26]

cp's OEIS Frontend

A088964 Number of solutions to x^2 == 2y^2 (mod n).

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	13
8	8
9	9
10	2
11	1
12	4
13	1
14	26
15	1
16	16
17	33
18	18
19	1
20	4
21	13
22	2
23	45
24	8
25	25
26	2
27	9
28	52
29	1
30	2
31	61
32	32
33	1
34	66
35	13
36	36
37	1
38	2
39	1
40	8
41	81
42	26
43	1
44	4
45	9
46	90
47	93
48	16
49	133
50	50
51	33
52	4
53	1
54	18
55	1
56	104
57	1
58	2
59	1
60	4
61	1
62	122
63	117
64	64
65	1
66	2
67	1
68	132
69	45
70	26

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	13
8	8
9	9
10	2
11	1
12	4
13	1
14	26
15	1
16	16
17	33
18	18
19	1
20	4
21	13
22	2
23	45
24	8
25	25
26	2
27	9
28	52
29	1
30	2
31	61
32	32
33	1
34	66
35	13
36	36
37	1
38	2
39	1
40	8
41	81
42	26
43	1
44	4
45	9
46	90
47	93
48	16
49	133
50	50
51	33
52	4
53	1
54	18
55	1
56	104
57	1
58	2
59	1
60	4
61	1
62	122
63	117
64	64
65	1
66	2
67	1
68	132
69	45
70	26

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	13
8	8
9	9
10	2
11	1
12	4
13	1
14	26
15	1
16	16
17	33
18	18
19	1
20	4
21	13
22	2
23	45
24	8
25	25
26	2
27	9
28	52
29	1
30	2
31	61
32	32
33	1
34	66
35	13
36	36
37	1
38	2
39	1
40	8
41	81
42	26
43	1
44	4
45	9
46	90
47	93
48	16
49	133
50	50
51	33
52	4
53	1
54	18
55	1
56	104
57	1
58	2
59	1
60	4
61	1
62	122
63	117
64	64
65	1
66	2
67	1
68	132
69	45
70	26