A354713 - cp's OEIS frontend

A354713 Number of solutions (n, D) for Pell equation n^2 - D*y^2 = 1 with fixed n.

n	a(n)
2	1
3	2
4	1
5	2
6	1
7	3
8	2
9	3
10	2
11	2
12	1
13	2
14	1
15	3
16	1
17	6
18	1
19	4
20	1
21	2
22	1
23	3
24	2
25	3
26	4
27	2
28	2
29	2
30	1
31	4
32	1
33	4
34	1
35	4
36	1
37	4
38	1
39	3
40	1
41	3
42	1
43	2
44	2
45	2
46	2
47	3
48	2
49	6
50	2
51	4
52	1
53	4
54	1
55	6
56	1
57	3
58	1
59	2
60	1
61	2
62	2
63	4
64	2
65	4
66	1
67	2
68	1
69	2
70	1
71	6
72	1
73	6
74	2
75	2
76	2
77	2
78	1
79	3
80	3
81	3
82	3
83	2
84	1
85	2

[1, 2, 1, 2, 1, 3, 2, 3, 2, 2, 1, 2, 1, 3, 1, 6, 1, 4, 1, 2, 1, 3, 2, 3, 4, 2, 2, 2, 1, 4, 1, 4, 1, 4, 1, 4, 1, 3, 1, 3, 1, 2, 2, 2, 2, 3, 2, 6, 2, 4, 1, 4, 1, 6, 1, 3, 1, 2, 1, 2, 2, 4, 2, 4, 1, 2, 1, 2, 1, 6, 1, 6, 2, 2, 2, 2, 1, 3, 3, 3, 3, 2, 1, 2]

cp's OEIS Frontend

A354713 Number of solutions (n, D) for Pell equation n^2 - D*y^2 = 1 with fixed n.

Table of values

List of values

n	a(n)
2	1
3	2
4	1
5	2
6	1
7	3
8	2
9	3
10	2
11	2
12	1
13	2
14	1
15	3
16	1
17	6
18	1
19	4
20	1
21	2
22	1
23	3
24	2
25	3
26	4
27	2
28	2
29	2
30	1
31	4
32	1
33	4
34	1
35	4
36	1
37	4
38	1
39	3
40	1
41	3
42	1
43	2
44	2
45	2
46	2
47	3
48	2
49	6
50	2
51	4
52	1
53	4
54	1
55	6
56	1
57	3
58	1
59	2
60	1
61	2
62	2
63	4
64	2
65	4
66	1
67	2
68	1
69	2
70	1
71	6
72	1
73	6
74	2
75	2
76	2
77	2
78	1
79	3
80	3
81	3
82	3
83	2
84	1
85	2

n	a(n)
2	1
3	2
4	1
5	2
6	1
7	3
8	2
9	3
10	2
11	2
12	1
13	2
14	1
15	3
16	1
17	6
18	1
19	4
20	1
21	2
22	1
23	3
24	2
25	3
26	4
27	2
28	2
29	2
30	1
31	4
32	1
33	4
34	1
35	4
36	1
37	4
38	1
39	3
40	1
41	3
42	1
43	2
44	2
45	2
46	2
47	3
48	2
49	6
50	2
51	4
52	1
53	4
54	1
55	6
56	1
57	3
58	1
59	2
60	1
61	2
62	2
63	4
64	2
65	4
66	1
67	2
68	1
69	2
70	1
71	6
72	1
73	6
74	2
75	2
76	2
77	2
78	1
79	3
80	3
81	3
82	3
83	2
84	1
85	2

n	a(n)
2	1
3	2
4	1
5	2
6	1
7	3
8	2
9	3
10	2
11	2
12	1
13	2
14	1
15	3
16	1
17	6
18	1
19	4
20	1
21	2
22	1
23	3
24	2
25	3
26	4
27	2
28	2
29	2
30	1
31	4
32	1
33	4
34	1
35	4
36	1
37	4
38	1
39	3
40	1
41	3
42	1
43	2
44	2
45	2
46	2
47	3
48	2
49	6
50	2
51	4
52	1
53	4
54	1
55	6
56	1
57	3
58	1
59	2
60	1
61	2
62	2
63	4
64	2
65	4
66	1
67	2
68	1
69	2
70	1
71	6
72	1
73	6
74	2
75	2
76	2
77	2
78	1
79	3
80	3
81	3
82	3
83	2
84	1
85	2