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.

A064987 a(n) = n*sigma(n).

Table of values

n a(n)
1 1
2 6
3 12
4 28
5 30
6 72
7 56
8 120
9 117
10 180
11 132
12 336
13 182
14 336
15 360
16 496
17 306
18 702
19 380
20 840
21 672
22 792
23 552
24 1440
25 775
26 1092
27 1080
28 1568
29 870
30 2160
31 992
32 2016
33 1584
34 1836
35 1680
36 3276
37 1406
38 2280
39 2184
40 3600
41 1722
42 4032
43 1892
44 3696
45 3510
46 3312
47 2256
48 5952

List of values

[1, 6, 12, 28, 30, 72, 56, 120, 117, 180, 132, 336, 182, 336, 360, 496, 306, 702, 380, 840, 672, 792, 552, 1440, 775, 1092, 1080, 1568, 870, 2160, 992, 2016, 1584, 1836, 1680, 3276, 1406, 2280, 2184, 3600, 1722, 4032, 1892, 3696, 3510, 3312, 2256, 5952]

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

Content is available under The OEIS End-User License Agreement.