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.

A162231 Base 8 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-8 digits, for some k.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 16
10 17
11 20
12 52
13 92
14 128
15 129
16 133
17 256
18 257
19 272
20 273
21 307
22 432
23 433
24 1024
25 1025
26 1056
27 1057
28 2323
29 8192
30 8193
31 13379
32 16384
33 16385
34 16512
35 16513
36 16819
37 17864
38 17865
39 24583
40 25639
41 65536
42 65537
43 65792
44 65793
45 212419
46 524288
47 524289

List of values

[0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 20, 52, 92, 128, 129, 133, 256, 257, 272, 273, 307, 432, 433, 1024, 1025, 1056, 1057, 2323, 8192, 8193, 13379, 16384, 16385, 16512, 16513, 16819, 17864, 17865, 24583, 25639, 65536, 65537, 65792, 65793, 212419, 524288, 524289]