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.

A256290 Numbers which have only digits 4 and 5 in base 10.

Table of values

n a(n)
1 4
2 5
3 44
4 45
5 54
6 55
7 444
8 445
9 454
10 455
11 544
12 545
13 554
14 555
15 4444
16 4445
17 4454
18 4455
19 4544
20 4545
21 4554
22 4555
23 5444
24 5445
25 5454
26 5455
27 5544
28 5545
29 5554
30 5555
31 44444
32 44445
33 44454
34 44455
35 44544
36 44545
37 44554
38 44555
39 45444
40 45445
41 45454
42 45455
43 45544

List of values

[4, 5, 44, 45, 54, 55, 444, 445, 454, 455, 544, 545, 554, 555, 4444, 4445, 4454, 4455, 4544, 4545, 4554, 4555, 5444, 5445, 5454, 5455, 5544, 5545, 5554, 5555, 44444, 44445, 44454, 44455, 44544, 44545, 44554, 44555, 45444, 45445, 45454, 45455, 45544]

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

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