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.

A111592 Admirable numbers. A number n is admirable if there exists a proper divisor d' of n such that sigma(n)-2d'=2n, where sigma(n) is the sum of all divisors of n.

Table of values

n a(n)
1 12
2 20
3 24
4 30
5 40
6 42
7 54
8 56
9 66
10 70
11 78
12 84
13 88
14 102
15 104
16 114
17 120
18 138
19 140
20 174
21 186
22 222
23 224
24 234
25 246
26 258
27 270
28 282
29 308
30 318
31 354
32 364
33 366
34 368
35 402
36 426
37 438
38 464
39 474
40 476
41 498
42 532
43 534
44 582
45 606
46 618
47 642
48 644
49 650
50 654
51 672
52 678
53 762
54 786
55 812

List of values

[12, 20, 24, 30, 40, 42, 54, 56, 66, 70, 78, 84, 88, 102, 104, 114, 120, 138, 140, 174, 186, 222, 224, 234, 246, 258, 270, 282, 308, 318, 354, 364, 366, 368, 402, 426, 438, 464, 474, 476, 498, 532, 534, 582, 606, 618, 642, 644, 650, 654, 672, 678, 762, 786, 812]

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

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