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.

A136956 Numbers k such that k and k^2 use only the digits 0, 4, 6, 8 and 9.

Table of values

n a(n)
1 0
2 8
3 64
4 80
5 98
6 640
7 664
8 800
9 898
10 980
11 998
12 6400
13 6640
14 6664
15 8000
16 8980
17 8998
18 9800
19 9980
20 9998
21 64000
22 66400
23 66640
24 66664
25 80000
26 89800
27 89980
28 89998
29 98000
30 98998
31 99800
32 99980
33 99998
34 640000
35 664000
36 664064
37 666400
38 666640
39 666664
40 684908
41 800000
42 806008
43 896886
44 898000
45 899800
46 899980
47 899998
48 980000
49 989980
50 989998
51 990408
52 998000

List of values

[0, 8, 64, 80, 98, 640, 664, 800, 898, 980, 998, 6400, 6640, 6664, 8000, 8980, 8998, 9800, 9980, 9998, 64000, 66400, 66640, 66664, 80000, 89800, 89980, 89998, 98000, 98998, 99800, 99980, 99998, 640000, 664000, 664064, 666400, 666640, 666664, 684908, 800000, 806008, 896886, 898000, 899800, 899980, 899998, 980000, 989980, 989998, 990408, 998000]

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

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