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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.

A055692 Numbers k such that 9^k == -1 (mod k-1).

Table of values

n a(n)
1 2
2 3
3 11
4 42
5 147
6 13818
7 21450
8 27594
9 41370
10 55011
11 126291
12 265722
13 417123
14 1315635
15 3994571
16 5704611
17 6860490
18 9298842
19 13941354
20 14349027
21 17658578
22 20382810
23 26557874
24 27841338
25 69831363
26 86550090
27 113272170
28 130457571
29 163013235
30 192688650
31 211142538
32 333792522

List of values

[2, 3, 11, 42, 147, 13818, 21450, 27594, 41370, 55011, 126291, 265722, 417123, 1315635, 3994571, 5704611, 6860490, 9298842, 13941354, 14349027, 17658578, 20382810, 26557874, 27841338, 69831363, 86550090, 113272170, 130457571, 163013235, 192688650, 211142538, 333792522]

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

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