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.

A169967 Numbers whose decimal expansion contains only 0's and 4's.

Table of values

n a(n)
1 0
2 4
3 40
4 44
5 400
6 404
7 440
8 444
9 4000
10 4004
11 4040
12 4044
13 4400
14 4404
15 4440
16 4444
17 40000
18 40004
19 40040
20 40044
21 40400
22 40404
23 40440
24 40444
25 44000
26 44004
27 44040
28 44044
29 44400
30 44404
31 44440
32 44444
33 400000
34 400004
35 400040
36 400044
37 400400
38 400404
39 400440
40 400444

List of values

[0, 4, 40, 44, 400, 404, 440, 444, 4000, 4004, 4040, 4044, 4400, 4404, 4440, 4444, 40000, 40004, 40040, 40044, 40400, 40404, 40440, 40444, 44000, 44004, 44040, 44044, 44400, 44404, 44440, 44444, 400000, 400004, 400040, 400044, 400400, 400404, 400440, 400444]

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

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