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.

A180930 Numbers whose sum of divisors is a hexagonal number.

Table of values

n a(n)
1 1
2 5
3 8
4 12
5 36
6 54
7 56
8 87
9 95
10 160
11 212
12 328
13 342
14 356
15 427
16 531
17 660
18 672
19 843
20 852
21 858
22 909
23 910
24 940
25 992
26 1002
27 1012
28 1162
29 1222
30 1245
31 1353
32 1417
33 1435
34 1495
35 1509
36 1547
37 1757
38 1837
39 1909
40 1927
41 1998
42 2072
43 2274
44 2793
45 2983
46 3051
47 3212
48 3219
49 3515
50 3548
51 3870

List of values

[1, 5, 8, 12, 36, 54, 56, 87, 95, 160, 212, 328, 342, 356, 427, 531, 660, 672, 843, 852, 858, 909, 910, 940, 992, 1002, 1012, 1162, 1222, 1245, 1353, 1417, 1435, 1495, 1509, 1547, 1757, 1837, 1909, 1927, 1998, 2072, 2274, 2793, 2983, 3051, 3212, 3219, 3515, 3548, 3870]

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

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