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.

A031428 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 4.

Table of values

n a(n)
1 5
2 18
3 39
4 68
5 105
6 150
7 174
8 203
9 264
10 333
11 370
12 410
13 495
14 588
15 689
16 793
17 798
18 855
19 915
20 1040
21 1105
22 1173
23 1313
24 1314
25 1378
26 1387
27 1462
28 1463
29 1620
30 1785
31 1958
32 2138
33 2139
34 2222
35 2232
36 2328
37 2525
38 2730
39 2834
40 2943
41 3164
42 3393
43 3630
44 3741

List of values

[5, 18, 39, 68, 105, 150, 174, 203, 264, 333, 370, 410, 495, 588, 689, 793, 798, 855, 915, 1040, 1105, 1173, 1313, 1314, 1378, 1387, 1462, 1463, 1620, 1785, 1958, 2138, 2139, 2222, 2232, 2328, 2525, 2730, 2834, 2943, 3164, 3393, 3630, 3741]

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

Content is available under The OEIS End-User License Agreement.