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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.

A031414 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 1.

Table of values

n a(n)
1 13
2 29
3 53
4 58
5 74
6 85
7 97
8 106
9 125
10 137
11 157
12 173
13 185
14 229
15 233
16 241
17 293
18 298
19 314
20 338
21 346
22 353
23 365
24 389
25 397
26 425
27 433
28 445
29 457
30 461
31 533
32 538
33 541
34 554
35 557
36 593
37 629
38 634
39 641
40 661
41 673
42 698
43 733
44 746
45 754
46 769
47 794
48 818
49 821
50 829
51 845
52 857
53 877

List of values

[13, 29, 53, 58, 74, 85, 97, 106, 125, 137, 157, 173, 185, 229, 233, 241, 293, 298, 314, 338, 346, 353, 365, 389, 397, 425, 433, 445, 457, 461, 533, 538, 541, 554, 557, 593, 629, 634, 641, 661, 673, 698, 733, 746, 754, 769, 794, 818, 821, 829, 845, 857, 877]

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

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