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.

A077378 Squarefree numbers whose external as well as internal digits form a squarefree number.

Table of values

n a(n)
1 123
2 127
3 129
4 130
5 131
6 133
7 134
8 137
9 139
10 151
11 154
12 155
13 157
14 159
15 161
16 163
17 165
18 167
19 170
20 173
21 174
22 177
23 179
24 221
25 222
26 223
27 226
28 229
29 231
30 233
31 239
32 251
33 253
34 259
35 262
36 263
37 266
38 269
39 271
40 273
41 321
42 323
43 327
44 329
45 330
46 331
47 334
48 335
49 337
50 339
51 353
52 354
53 355
54 357
55 358

List of values

[123, 127, 129, 130, 131, 133, 134, 137, 139, 151, 154, 155, 157, 159, 161, 163, 165, 167, 170, 173, 174, 177, 179, 221, 222, 223, 226, 229, 231, 233, 239, 251, 253, 259, 262, 263, 266, 269, 271, 273, 321, 323, 327, 329, 330, 331, 334, 335, 337, 339, 353, 354, 355, 357, 358]

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

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