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.

A061661 Numbers k > 1 such that, in base 7, k and k^2 contain the same digits in the same proportion.

Table of values

n a(n)
1 30
2 210
3 1470
4 10290
5 10652
6 11636
7 53544
8 53730
9 59130
10 64896
11 72030
12 74564
13 81452
14 93510
15 94356
16 94400
17 97038
18 113754
19 348540
20 364016
21 374808
22 375204
23 376110
24 378642
25 413910
26 420848
27 454272
28 476352
29 479642
30 483428
31 485460
32 488232
33 503648
34 504210
35 516302

List of values

[30, 210, 1470, 10290, 10652, 11636, 53544, 53730, 59130, 64896, 72030, 74564, 81452, 93510, 94356, 94400, 97038, 113754, 348540, 364016, 374808, 375204, 376110, 378642, 413910, 420848, 454272, 476352, 479642, 483428, 485460, 488232, 503648, 504210, 516302]

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

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