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.

A378048 Numbers k such that k and k^2 together use at most 4 distinct decimal digits.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 19
19 20
20 21
21 22
22 23
23 25
24 26
25 27
26 28
27 30
28 31
29 35
30 38
31 40
32 41
33 45
34 46
35 50
36 55
37 56
38 60
39 63
40 64
41 65
42 66
43 68
44 70
45 74
46 75
47 76
48 77
49 80
50 81
51 83
52 85
53 88
54 90
55 91
56 95
57 96
58 97
59 99
60 100
61 101
62 102
63 105
64 109
65 110

List of values

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 25, 26, 27, 28, 30, 31, 35, 38, 40, 41, 45, 46, 50, 55, 56, 60, 63, 64, 65, 66, 68, 70, 74, 75, 76, 77, 80, 81, 83, 85, 88, 90, 91, 95, 96, 97, 99, 100, 101, 102, 105, 109, 110]

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

Content is available under The OEIS End-User License Agreement.