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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.

A231369 Numbers n such that antisigma(x) = n has no solution, where antisigma(m) = A024816(m) = the sum of the nondivisors of m that are between 1 and m.

Table of values

n a(n)
1 1
2 4
3 5
4 6
5 7
6 8
7 10
8 11
9 12
10 13
11 14
12 15
13 16
14 17
15 18
16 19
17 22
18 23
19 24
20 25
21 26
22 27
23 28
24 29
25 30
26 31
27 33
28 34
29 35
30 36
31 38
32 39
33 40
34 41
35 42
36 43
37 44
38 45
39 46
40 47
41 48
42 49
43 51
44 52
45 53
46 55
47 56
48 57
49 58
50 59
51 60
52 61
53 62
54 63
55 64
56 65
57 66
58 67
59 68
60 69
61 70
62 71
63 72
64 73
65 74
66 75

List of values

[1, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75]

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

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