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.

A030477 Numbers k such that k^2 has property that all even digits occur together and all odd digits occur together.

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 12
13 14
14 15
15 17
16 18
17 20
18 21
19 22
20 24
21 25
22 28
23 29
24 30
25 32
26 34
27 38
28 40
29 42
30 44
31 45
32 47
33 49
34 51
35 53
36 56
37 58
38 60
39 62
40 65
41 67
42 68
43 72
44 76
45 78
46 79
47 80
48 83
49 86
50 88
51 91
52 92
53 93
54 98
55 100
56 102
57 108
58 118
59 120
60 122
61 124
62 132
63 134
64 138
65 140

List of values

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 22, 24, 25, 28, 29, 30, 32, 34, 38, 40, 42, 44, 45, 47, 49, 51, 53, 56, 58, 60, 62, 65, 67, 68, 72, 76, 78, 79, 80, 83, 86, 88, 91, 92, 93, 98, 100, 102, 108, 118, 120, 122, 124, 132, 134, 138, 140]