cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A240072 Least number k with continued fraction of sqrt(k) having periodic part of length 2*n.

Table of values

n a(n)
1 3
2 7
3 19
4 31
5 43
6 46
7 134
8 94
9 139
10 151
11 166
12 271
13 211
14 334
15 379
16 463
17 331
18 478
19 619
20 526
21 571
22 604
23 694
24 631
25 1051
26 751
27 886
28 1039
29 1141
30 919
31 1291
32 1324
33 1699
34 1879
35 1366
36 2476
37 2038
38 1516
39 1894
40 1759
41 2164
42 1831
43 2179
44 1726
45 2851
46 2461
47 2011
48 2311
49 4603

List of values

[3, 7, 19, 31, 43, 46, 134, 94, 139, 151, 166, 271, 211, 334, 379, 463, 331, 478, 619, 526, 571, 604, 694, 631, 1051, 751, 886, 1039, 1141, 919, 1291, 1324, 1699, 1879, 1366, 2476, 2038, 1516, 1894, 1759, 2164, 1831, 2179, 1726, 2851, 2461, 2011, 2311, 4603]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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