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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.

A382506 a(n) is the smallest k such that sigma(n) + k is a perfect number.

Table of values

n a(n)
1 5
2 3
3 2
4 21
5 0
6 16
7 20
8 13
9 15
10 10
11 16
12 0
13 14
14 4
15 4
16 465
17 10
18 457
19 8
20 454
21 464
22 460
23 4
24 436
25 465
26 454
27 456
28 440
29 466
30 424
31 464
32 433
33 448
34 442
35 448
36 405
37 458
38 436
39 440
40 406
41 454
42 400
43 452
44 412
45 418
46 424
47 448
48 372
49 439
50 403
51 424
52 398
53 442
54 376
55 424
56 376
57 416
58 406
59 436
60 328
61 434
62 400

List of values

[5, 3, 2, 21, 0, 16, 20, 13, 15, 10, 16, 0, 14, 4, 4, 465, 10, 457, 8, 454, 464, 460, 4, 436, 465, 454, 456, 440, 466, 424, 464, 433, 448, 442, 448, 405, 458, 436, 440, 406, 454, 400, 452, 412, 418, 424, 448, 372, 439, 403, 424, 398, 442, 376, 424, 376, 416, 406, 436, 328, 434, 400]

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

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