A013945 - cp's OEIS frontend

A013945 Least d such that period of continued fraction for sqrt(d) contains n (n^2+2 if n odd, (n/2)^2+1 if n even).

n	a(n)
1	3
2	2
3	11
4	5
5	27
6	10
7	51
8	17
9	83
10	26
11	123
12	37
13	171
14	50
15	227
16	65
17	291
18	82
19	363
20	101
21	443
22	122
23	531
24	145
25	627
26	170
27	731
28	197
29	843
30	226
31	963
32	257
33	1091
34	290
35	1227
36	325
37	1371
38	362
39	1523
40	401
41	1683
42	442
43	1851
44	485
45	2027
46	530
47	2211
48	577
49	2403
50	626
51	2603
52	677
53	2811

[3, 2, 11, 5, 27, 10, 51, 17, 83, 26, 123, 37, 171, 50, 227, 65, 291, 82, 363, 101, 443, 122, 531, 145, 627, 170, 731, 197, 843, 226, 963, 257, 1091, 290, 1227, 325, 1371, 362, 1523, 401, 1683, 442, 1851, 485, 2027, 530, 2211, 577, 2403, 626, 2603, 677, 2811]

cp's OEIS Frontend

A013945 Least d such that period of continued fraction for sqrt(d) contains n (n^2+2 if n odd, (n/2)^2+1 if n even).

Table of values

List of values