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.

A128395 Numbers k such that k^2 divides 15^k-1.

Table of values

n a(n)
1 1
2 2
3 4
4 7
5 8
6 14
7 16
8 28
9 56
10 112
11 136
12 272
13 452
14 812
15 904
16 952
17 1624
18 1808
19 1904
20 3164
21 3248
22 6328
23 11912
24 12656
25 15368
26 18632
27 23824
28 27608
29 30736
30 37264
31 47908
32 55216
33 60248
34 83384
35 91756
36 95816
37 102604
38 107576
39 113936
40 120496
41 130424
42 166768

List of values

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 136, 272, 452, 812, 904, 952, 1624, 1808, 1904, 3164, 3248, 6328, 11912, 12656, 15368, 18632, 23824, 27608, 30736, 37264, 47908, 55216, 60248, 83384, 91756, 95816, 102604, 107576, 113936, 120496, 130424, 166768]