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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.

A055686 Numbers k such that 3^k == -1 (mod k-1).

Table of values

n a(n)
1 2
2 3
3 5
4 6
5 15
6 245
7 366
8 435
9 855
10 2295
11 3795
12 5967
13 7875
14 10878
15 26475
16 33915
17 117615
18 188775
19 231435
20 284355
21 487635
22 501039
23 589155
24 593775
25 621675
26 755595
27 1255815
28 1306935
29 1642095
30 1911195
31 2193125
32 2434755
33 2484675
34 2507835

List of values

[2, 3, 5, 6, 15, 245, 366, 435, 855, 2295, 3795, 5967, 7875, 10878, 26475, 33915, 117615, 188775, 231435, 284355, 487635, 501039, 589155, 593775, 621675, 755595, 1255815, 1306935, 1642095, 1911195, 2193125, 2434755, 2484675, 2507835]

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

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