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.

A061682 Length of period of continued fraction expansion of square root of (2^(2n+1)+1).

Table of values

n a(n)
2 4
3 10
4 16
5 44
6 74
7 46
8 204
9 714
10 702
11 908
12 404
13 7754
14 1136
15 9886
16 8154
17 23578
18 65096
19 404762
20 23992
21 3514774
22 110124
23 4802160
24 6490450
25 180832
26 115972
27 770304
28 62665998
29 133093360
30 1019300318
31 60079334
32 113987888
33 5702124038
34 4463754028
35 713372392
36 38574516706
37 9096543466
38 7030527700
39 582442851838
40 16708770664
41 32628786870

List of values

[4, 10, 16, 44, 74, 46, 204, 714, 702, 908, 404, 7754, 1136, 9886, 8154, 23578, 65096, 404762, 23992, 3514774, 110124, 4802160, 6490450, 180832, 115972, 770304, 62665998, 133093360, 1019300318, 60079334, 113987888, 5702124038, 4463754028, 713372392, 38574516706, 9096543466, 7030527700, 582442851838, 16708770664, 32628786870]

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

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