A002350 - cp's OEIS frontend

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

n	a(n)
1	1
2	3
3	2
4	1
5	9
6	5
7	8
8	3
9	1
10	19
11	10
12	7
13	649
14	15
15	4
16	1
17	33
18	17
19	170
20	9
21	55
22	197
23	24
24	5
25	1
26	51
27	26
28	127
29	9801
30	11
31	1520
32	17
33	23
34	35
35	6
36	1
37	73
38	37
39	25
40	19
41	2049
42	13
43	3482
44	199
45	161
46	24335
47	48
48	7
49	1
50	99
51	50
52	649
53	66249
54	485
55	89
56	15
57	151
58	19603
59	530
60	31
61	1766319049
62	63
63	8
64	1

[1, 3, 2, 1, 9, 5, 8, 3, 1, 19, 10, 7, 649, 15, 4, 1, 33, 17, 170, 9, 55, 197, 24, 5, 1, 51, 26, 127, 9801, 11, 1520, 17, 23, 35, 6, 1, 73, 37, 25, 19, 2049, 13, 3482, 199, 161, 24335, 48, 7, 1, 99, 50, 649, 66249, 485, 89, 15, 151, 19603, 530, 31, 1766319049, 63, 8, 1]

cp's OEIS Frontend

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

Table of values

List of values