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.

A212127 Numbers n whose arithmetic derivative equals the sum of its proper divisors.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 7
6 11
7 12
8 13
9 17
10 18
11 19
12 23
13 29
14 31
15 37
16 41
17 43
18 47
19 53
20 59
21 61
22 67
23 71
24 73
25 79
26 83
27 89
28 97
29 101
30 103
31 107
32 109
33 113
34 127
35 131
36 137
37 139
38 149
39 151
40 157
41 163
42 167
43 173
44 179
45 181
46 191
47 193
48 197
49 199
50 211
51 220
52 223
53 227
54 229
55 233
56 239
57 241
58 251
59 257

List of values

[1, 2, 3, 5, 7, 11, 12, 13, 17, 18, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 220, 223, 227, 229, 233, 239, 241, 251, 257]