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.

A338712 Numbers with all digits equal and from the set {1, 3, 7, 9}.

Table of values

n a(n)
1 1
2 3
3 7
4 9
5 11
6 33
7 77
8 99
9 111
10 333
11 777
12 999
13 1111
14 3333
15 7777
16 9999
17 11111
18 33333
19 77777
20 99999
21 111111
22 333333
23 777777
24 999999
25 1111111
26 3333333
27 7777777
28 9999999
29 11111111
30 33333333
31 77777777
32 99999999
33 111111111
34 333333333
35 777777777
36 999999999
37 1111111111
38 3333333333
39 7777777777
40 9999999999

List of values

[1, 3, 7, 9, 11, 33, 77, 99, 111, 333, 777, 999, 1111, 3333, 7777, 9999, 11111, 33333, 77777, 99999, 111111, 333333, 777777, 999999, 1111111, 3333333, 7777777, 9999999, 11111111, 33333333, 77777777, 99999999, 111111111, 333333333, 777777777, 999999999, 1111111111, 3333333333, 7777777777, 9999999999]

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

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