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.

A066862 Numbers k such that k divides Sum_{i=1..k} gcd(k,i) = A018804(k).

Table of values

n a(n)
1 1
2 4
3 15
4 16
5 27
6 48
7 60
8 64
9 108
10 144
11 240
12 256
13 325
14 432
15 729
16 891
17 960
18 1008
19 1024
20 1200
21 1280
22 1296
23 1300
24 1728
25 1875
26 2916
27 3072
28 3125
29 3564
30 3645
31 3840
32 3888
33 4095
34 4096
35 5200
36 6000
37 6237
38 6375
39 6400
40 6912
41 7056
42 7500
43 8775
44 9216
45 11520
46 11664
47 12500

List of values

[1, 4, 15, 16, 27, 48, 60, 64, 108, 144, 240, 256, 325, 432, 729, 891, 960, 1008, 1024, 1200, 1280, 1296, 1300, 1728, 1875, 2916, 3072, 3125, 3564, 3645, 3840, 3888, 4095, 4096, 5200, 6000, 6237, 6375, 6400, 6912, 7056, 7500, 8775, 9216, 11520, 11664, 12500]