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.

A349761 Numbers k such that sigma(k) = A000203(k) is an abundant number (A005101) and phi(k) = A000010(k) is a deficient number (A005100).

Table of values

n a(n)
1 6
2 10
3 11
4 15
5 17
6 20
7 22
8 23
9 24
10 30
11 34
12 40
13 46
14 47
15 51
16 53
17 59
18 60
19 68
20 69
21 80
22 83
23 85
24 92
25 94
26 96
27 102
28 106
29 107
30 118
31 120
32 131
33 136
34 137
35 138
36 141
37 149
38 160
39 166
40 167
41 170
42 173
43 177
44 179
45 188
46 191
47 204
48 214
49 227
50 233
51 235
52 236
53 239
54 240
55 249
56 251
57 255
58 257

List of values

[6, 10, 11, 15, 17, 20, 22, 23, 24, 30, 34, 40, 46, 47, 51, 53, 59, 60, 68, 69, 80, 83, 85, 92, 94, 96, 102, 106, 107, 118, 120, 131, 136, 137, 138, 141, 149, 160, 166, 167, 170, 173, 177, 179, 188, 191, 204, 214, 227, 233, 235, 236, 239, 240, 249, 251, 255, 257]

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

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