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.

A031670 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 82.

Table of values

n a(n)
1 42461
2 136981
3 137722
4 206237
5 208057
6 379681
7 383386
8 387109
9 487493
10 493093
11 497314
12 621305
13 750397
14 897338
15 899233
16 903029
17 1053301
18 1055354
19 1057409
20 1059466
21 1065649
22 1069781
23 1073921
24 1075994
25 1228393
26 1237273
27 1250653

List of values

[42461, 136981, 137722, 206237, 208057, 379681, 383386, 387109, 487493, 493093, 497314, 621305, 750397, 897338, 899233, 903029, 1053301, 1055354, 1057409, 1059466, 1065649, 1069781, 1073921, 1075994, 1228393, 1237273, 1250653]

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

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