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.

A231114 Numbers k dividing u(k), where the Lucas sequence is defined u(i) = u(i-1) - 4*u(i-2) with initial conditions u(0)=0, u(1)=1.

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 15
6 25
7 27
8 45
9 75
10 81
11 125
12 135
13 171
14 225
15 243
16 375
17 405
18 435
19 465
20 513
21 625
22 675
23 729
24 855
25 1125
26 1215
27 1305
28 1395
29 1539
30 1875
31 2025
32 2175
33 2187
34 2325
35 2565
36 3125
37 3249
38 3375
39 3645
40 3725
41 3915
42 4005
43 4185
44 4275
45 4617
46 5625
47 6075
48 6327
49 6525
50 6561

List of values

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 171, 225, 243, 375, 405, 435, 465, 513, 625, 675, 729, 855, 1125, 1215, 1305, 1395, 1539, 1875, 2025, 2175, 2187, 2325, 2565, 3125, 3249, 3375, 3645, 3725, 3915, 4005, 4185, 4275, 4617, 5625, 6075, 6327, 6525, 6561]