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.

A136832 Numbers k such that k and k^2 use only the digits 0, 1, 2, 7 and 8.

Table of values

n a(n)
1 0
2 1
3 10
4 11
5 100
6 101
7 110
8 1000
9 1001
10 1010
11 1011
12 1100
13 1101
14 10000
15 10001
16 10010
17 10011
18 10100
19 10110
20 11000
21 11001
22 11010
23 87811
24 100000
25 100001
26 100010
27 100011
28 100100
29 100101
30 100110
31 101000
32 101001
33 101100
34 110000
35 110001
36 110010
37 110100
38 878110
39 1000000
40 1000001
41 1000010
42 1000011
43 1000100
44 1000101
45 1000110
46 1001000
47 1001010

List of values

[0, 1, 10, 11, 100, 101, 110, 1000, 1001, 1010, 1011, 1100, 1101, 10000, 10001, 10010, 10011, 10100, 10110, 11000, 11001, 11010, 87811, 100000, 100001, 100010, 100011, 100100, 100101, 100110, 101000, 101001, 101100, 110000, 110001, 110010, 110100, 878110, 1000000, 1000001, 1000010, 1000011, 1000100, 1000101, 1000110, 1001000, 1001010]

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

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