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.

A372740 Coreful untouchable numbers: numbers that are not the sum of aliquot coreful divisors (A336563) of any number.

Table of values

n a(n)
1 1
2 4
3 8
4 9
5 16
6 20
7 25
8 27
9 28
10 32
11 40
12 44
13 45
14 48
15 49
16 50
17 52
18 54
19 63
20 64
21 68
22 72
23 75
24 76
25 81
26 88
27 92
28 99
29 100
30 104
31 108
32 116
33 117
34 121
35 124
36 125
37 128
38 136
39 144
40 147
41 148
42 152
43 153
44 160
45 162
46 164
47 169
48 171
49 172
50 175
51 176
52 184
53 188
54 189
55 192
56 196
57 200
58 207
59 208

List of values

[1, 4, 8, 9, 16, 20, 25, 27, 28, 32, 40, 44, 45, 48, 49, 50, 52, 54, 63, 64, 68, 72, 75, 76, 81, 88, 92, 99, 100, 104, 108, 116, 117, 121, 124, 125, 128, 136, 144, 147, 148, 152, 153, 160, 162, 164, 169, 171, 172, 175, 176, 184, 188, 189, 192, 196, 200, 207, 208]

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

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