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.

A256340 Numbers which have only digits 7 and 8 in base 10.

Table of values

n a(n)
1 7
2 8
3 77
4 78
5 87
6 88
7 777
8 778
9 787
10 788
11 877
12 878
13 887
14 888
15 7777
16 7778
17 7787
18 7788
19 7877
20 7878
21 7887
22 7888
23 8777
24 8778
25 8787
26 8788
27 8877
28 8878
29 8887
30 8888
31 77777
32 77778
33 77787
34 77788
35 77877
36 77878
37 77887
38 77888
39 78777
40 78778
41 78787
42 78788
43 78877
44 78878

List of values

[7, 8, 77, 78, 87, 88, 777, 778, 787, 788, 877, 878, 887, 888, 7777, 7778, 7787, 7788, 7877, 7878, 7887, 7888, 8777, 8778, 8787, 8788, 8877, 8878, 8887, 8888, 77777, 77778, 77787, 77788, 77877, 77878, 77887, 77888, 78777, 78778, 78787, 78788, 78877, 78878]

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

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