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.

A075809 Palindromic even numbers with an odd number of distinct prime factors.

Table of values

n a(n)
1 2
2 66
3 222
4 282
5 434
6 474
7 494
8 606
9 646
10 2222
11 2882
12 4334
13 4994
14 6006
15 6226
16 6446
17 6886
18 8338
19 8558
20 8778
21 8998
22 20002
23 20202
24 20702
25 20802
26 20902
27 22222
28 22922
29 24042
30 24342
31 24542
32 24742
33 24942
34 26062
35 26162
36 26462
37 28082
38 28182
39 28282

List of values

[2, 66, 222, 282, 434, 474, 494, 606, 646, 2222, 2882, 4334, 4994, 6006, 6226, 6446, 6886, 8338, 8558, 8778, 8998, 20002, 20202, 20702, 20802, 20902, 22222, 22922, 24042, 24342, 24542, 24742, 24942, 26062, 26162, 26462, 28082, 28182, 28282]

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

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