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.

A032917 Numbers having only digits 1 and 3 in their decimal representation.

Table of values

n a(n)
1 1
2 3
3 11
4 13
5 31
6 33
7 111
8 113
9 131
10 133
11 311
12 313
13 331
14 333
15 1111
16 1113
17 1131
18 1133
19 1311
20 1313
21 1331
22 1333
23 3111
24 3113
25 3131
26 3133
27 3311
28 3313
29 3331
30 3333
31 11111
32 11113
33 11131
34 11133
35 11311
36 11313
37 11331
38 11333
39 13111
40 13113

List of values

[1, 3, 11, 13, 31, 33, 111, 113, 131, 133, 311, 313, 331, 333, 1111, 1113, 1131, 1133, 1311, 1313, 1331, 1333, 3111, 3113, 3131, 3133, 3311, 3313, 3331, 3333, 11111, 11113, 11131, 11133, 11311, 11313, 11331, 11333, 13111, 13113]

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

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