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.

A137067 Numbers k such that k and k^2 use only the digits 2, 3, 4, 5 and 6.

Table of values

n a(n)
1 2
2 5
3 6
4 25
5 65
6 66
7 235
8 256
9 665
10 666
11 2335
12 2535
13 6665
14 6666
15 23335
16 23525
17 23566
18 66665
19 66666
20 233335
21 235462
22 254235
23 255465
24 652244
25 665256
26 666665
27 666666
28 2333335
29 2335432
30 2335666
31 2354235
32 2534432
33 2534665
34 2536656
35 2554262
36 6523462
37 6524235
38 6652242
39 6666665
40 6666666
41 23333335
42 23352656
43 23354365
44 23523462
45 23546665

List of values

[2, 5, 6, 25, 65, 66, 235, 256, 665, 666, 2335, 2535, 6665, 6666, 23335, 23525, 23566, 66665, 66666, 233335, 235462, 254235, 255465, 652244, 665256, 666665, 666666, 2333335, 2335432, 2335666, 2354235, 2534432, 2534665, 2536656, 2554262, 6523462, 6524235, 6652242, 6666665, 6666666, 23333335, 23352656, 23354365, 23523462, 23546665]

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

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