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.

A380974 Numbers k such that k*(k-1) is composed of exactly two different decimal digits.

Table of values

n a(n)
1 4
2 5
3 6
4 7
5 8
6 9
7 10
8 11
9 17
10 24
11 25
12 32
13 34
14 67
15 75
16 78
17 100
18 101
19 142
20 167
21 334
22 667
23 1000
24 1001
25 1667
26 3334
27 6667
28 10000
29 10001
30 16667
31 33334
32 66667
33 100000
34 100001
35 166667
36 333334
37 666667
38 1000000
39 1000001
40 1666667
41 3333334
42 6666667
43 10000000
44 10000001
45 16666667
46 33333334
47 66666667
48 100000000

List of values

[4, 5, 6, 7, 8, 9, 10, 11, 17, 24, 25, 32, 34, 67, 75, 78, 100, 101, 142, 167, 334, 667, 1000, 1001, 1667, 3334, 6667, 10000, 10001, 16667, 33334, 66667, 100000, 100001, 166667, 333334, 666667, 1000000, 1000001, 1666667, 3333334, 6666667, 10000000, 10000001, 16666667, 33333334, 66666667, 100000000]