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.

A162228 Base 7 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-7 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 9
9 10
10 16
11 25
12 32
13 45
14 65
15 133
16 134
17 152
18 250
19 1542
20 3190
21 3222
22 3612
23 3613
24 4183
25 9286
26 35411
27 37271
28 72865
29 191334
30 193393
31 376889
32 535069
33 794376
34 1110699
35 2236488
36 3021897
37 4431562
38 8094840
39 9885773
40 10883814
41 16219922

List of values

[0, 1, 2, 3, 4, 5, 6, 9, 10, 16, 25, 32, 45, 65, 133, 134, 152, 250, 1542, 3190, 3222, 3612, 3613, 4183, 9286, 35411, 37271, 72865, 191334, 193393, 376889, 535069, 794376, 1110699, 2236488, 3021897, 4431562, 8094840, 9885773, 10883814, 16219922]