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.

A050699 Nonprime numbers n such that n and n-reversed (<> n and no leading zeros) have the same number of prime factors (counted with multiplicity).

Table of values

n a(n)
1 15
2 26
3 39
4 49
5 51
6 58
7 62
8 85
9 93
10 94
11 115
12 117
13 122
14 123
15 126
16 129
17 143
18 147
19 155
20 158
21 159
22 165
23 169
24 177
25 178
26 183
27 185
28 187
29 203
30 205
31 221
32 225
33 226
34 244
35 246
36 265
37 285
38 286
39 289
40 294
41 302
42 314
43 315
44 319
45 321
46 326
47 327
48 329
49 335
50 338
51 339
52 341
53 355
54 366

List of values

[15, 26, 39, 49, 51, 58, 62, 85, 93, 94, 115, 117, 122, 123, 126, 129, 143, 147, 155, 158, 159, 165, 169, 177, 178, 183, 185, 187, 203, 205, 221, 225, 226, 244, 246, 265, 285, 286, 289, 294, 302, 314, 315, 319, 321, 326, 327, 329, 335, 338, 339, 341, 355, 366]

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

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