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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.

A350302 Irregular triangle read by rows: The n-th row lists the larger number in each "n-th power friendship", that is, numbers k such that digsum(digsum(k^n)^n) = k and digsum(k^n) < k.

Table of values

n a(n)
2 16
3 28
4 27
5 29
6 34
7 47
8 55
9 62
10 65
11 73
12 80
13 127
14 70
15 121
16 136
17 181
18 117
19 130
20 153
21 153
22 160
23 161
24 176
25 181
26 184
27 187
28 189
29 198
30 208
31 221
32 235
33 193
34 252
35 190
36 233
37 220
38 247
39 220
40 254
41 257
42 259
43 277
44 279
45 289
46 263
47 319
48 261
49 331
50 260
51 297
52 316
53 280
54 304
55 313

List of values

[16, 28, 27, 29, 34, 47, 55, 62, 65, 73, 80, 127, 70, 121, 136, 181, 117, 130, 153, 153, 160, 161, 176, 181, 184, 187, 189, 198, 208, 221, 235, 193, 252, 190, 233, 220, 247, 220, 254, 257, 259, 277, 279, 289, 263, 319, 261, 331, 260, 297, 316, 280, 304, 313]

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

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