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.

A217768 Smallest number k > 0 for which sigma(k - n) = sigma(k + n).

Table of values

n a(n)
1 34
2 53
3 23
4 19
5 26
6 41
7 31
8 38
9 49
10 52
11 68
12 82
13 112
14 80
15 103
16 76
17 110
18 123
19 4
20 83
21 101
22 136
23 3
24 164
25 130
26 5
27 147
28 133
29 381
30 254
31 7
32 149
33 253
34 1
35 131
36 246
37 172
38 8
39 404
40 7
41 6
42 312
43 148
44 209
45 309
46 241
47 487
48 328
49 9
50 260

List of values

[34, 53, 23, 19, 26, 41, 31, 38, 49, 52, 68, 82, 112, 80, 103, 76, 110, 123, 4, 83, 101, 136, 3, 164, 130, 5, 147, 133, 381, 254, 7, 149, 253, 1, 131, 246, 172, 8, 404, 7, 6, 312, 148, 209, 309, 241, 487, 328, 9, 260]