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.

A178243 a(2n) = a(n), a(2n+1) = 10*a(n) + a(n+1).

Table of values

n a(n)
1 1
2 1
3 11
4 1
5 21
6 11
7 111
8 1
9 31
10 21
11 221
12 11
13 221
14 111
15 1111
16 1
17 41
18 31
19 331
20 21
21 431
22 221
23 2221
24 11
25 331
26 221
27 2321
28 111
29 2221
30 1111
31 11111
32 1
33 51
34 41
35 441
36 31
37 641
38 331
39 3331
40 21
41 641
42 431
43 4531
44 221
45 4431
46 2221
47 22221
48 11
49 441
50 331
51 3531
52 221
53 4531
54 2321
55 23321

List of values

[1, 1, 11, 1, 21, 11, 111, 1, 31, 21, 221, 11, 221, 111, 1111, 1, 41, 31, 331, 21, 431, 221, 2221, 11, 331, 221, 2321, 111, 2221, 1111, 11111, 1, 51, 41, 441, 31, 641, 331, 3331, 21, 641, 431, 4531, 221, 4431, 2221, 22221, 11, 441, 331, 3531, 221, 4531, 2321, 23321]