A002349 - cp's OEIS frontend

A002349 Take solution to Pellian equation x^2 - n*y^2 = 1 with smallest positive y and x >= 0; sequence gives a(n) = y, or 0 if n is a square. A002350 gives values of x.

n	a(n)
1	0
2	2
3	1
4	0
5	4
6	2
7	3
8	1
9	0
10	6
11	3
12	2
13	180
14	4
15	1
16	0
17	8
18	4
19	39
20	2
21	12
22	42
23	5
24	1
25	0
26	10
27	5
28	24
29	1820
30	2
31	273
32	3
33	4
34	6
35	1
36	0
37	12
38	6
39	4
40	3
41	320
42	2
43	531
44	30
45	24
46	3588
47	7
48	1
49	0
50	14
51	7
52	90
53	9100
54	66
55	12
56	2
57	20
58	2574
59	69
60	4
61	226153980
62	8
63	1
64	0
65	16
66	8
67	5967
68	4
69	936
70	30
71	413
72	2
73	267000
74	430
75	3

[0, 2, 1, 0, 4, 2, 3, 1, 0, 6, 3, 2, 180, 4, 1, 0, 8, 4, 39, 2, 12, 42, 5, 1, 0, 10, 5, 24, 1820, 2, 273, 3, 4, 6, 1, 0, 12, 6, 4, 3, 320, 2, 531, 30, 24, 3588, 7, 1, 0, 14, 7, 90, 9100, 66, 12, 2, 20, 2574, 69, 4, 226153980, 8, 1, 0, 16, 8, 5967, 4, 936, 30, 413, 2, 267000, 430, 3]

cp's OEIS Frontend

A002349 Take solution to Pellian equation x^2 - n*y^2 = 1 with smallest positive y and x >= 0; sequence gives a(n) = y, or 0 if n is a square. A002350 gives values of x.

Table of values

List of values