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.

A031668 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 80.

Table of values

n a(n)
1 40829
2 132577
3 195485
4 197257
5 362629
6 365041
7 466778
8 473633
9 584057
10 587117
11 590185
12 850613
13 852458
14 1002626
15 1006634
16 1014674
17 1016689
18 1018706
19 1024769
20 1184473
21 1188829
22 1351085
23 1360397
24 1365065
25 1374425
26 1541042
27 1548497

List of values

[40829, 132577, 195485, 197257, 362629, 365041, 466778, 473633, 584057, 587117, 590185, 850613, 852458, 1002626, 1006634, 1014674, 1016689, 1018706, 1024769, 1184473, 1188829, 1351085, 1360397, 1365065, 1374425, 1541042, 1548497]

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

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