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.

A136931 Numbers k such that k and k^2 use only the digits 0, 3, 4, 6 and 8.

Table of values

n a(n)
1 0
2 6
3 8
4 60
5 80
6 600
7 800
8 6000
9 6638
10 6808
11 6844
12 8000
13 60000
14 60406
15 60688
16 66380
17 66808
18 68080
19 68440
20 80000
21 600000
22 604060
23 606880
24 663800
25 668080
26 680800
27 684400
28 800000
29 6000000
30 6003406
31 6004006
32 6040600
33 6068800
34 6638000
35 6680800
36 6808000
37 6844000
38 8000000
39 60000000
40 60034060
41 60040060
42 60406000
43 60688000
44 66363008
45 66380000

List of values

[0, 6, 8, 60, 80, 600, 800, 6000, 6638, 6808, 6844, 8000, 60000, 60406, 60688, 66380, 66808, 68080, 68440, 80000, 600000, 604060, 606880, 663800, 668080, 680800, 684400, 800000, 6000000, 6003406, 6004006, 6040600, 6068800, 6638000, 6680800, 6808000, 6844000, 8000000, 60000000, 60034060, 60040060, 60406000, 60688000, 66363008, 66380000]

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

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