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.

A257085 Numbers n such that the decimal expansions of both n and n^2 only use the digits 0..6.

Table of values

n a(n)
1 0
2 1
3 2
4 4
5 5
6 6
7 10
8 11
9 12
10 15
11 16
12 20
13 21
14 25
15 32
16 34
17 35
18 40
19 45
20 46
21 50
22 51
23 55
24 56
25 60
26 65
27 66
28 100
29 101
30 102
31 105
32 106
33 110
34 111
35 112
36 115
37 116
38 120
39 121
40 125
41 142
42 145
43 146
44 150
45 152
46 155
47 156
48 160
49 162
50 200
51 201
52 204
53 205
54 206
55 210
56 211
57 215
58 216
59 225
60 231
61 235
62 245
63 246
64 250
65 251
66 252
67 254
68 255
69 256

List of values

[0, 1, 2, 4, 5, 6, 10, 11, 12, 15, 16, 20, 21, 25, 32, 34, 35, 40, 45, 46, 50, 51, 55, 56, 60, 65, 66, 100, 101, 102, 105, 106, 110, 111, 112, 115, 116, 120, 121, 125, 142, 145, 146, 150, 152, 155, 156, 160, 162, 200, 201, 204, 205, 206, 210, 211, 215, 216, 225, 231, 235, 245, 246, 250, 251, 252, 254, 255, 256]

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

Content is available under The OEIS End-User License Agreement.