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.

A023717 Numbers with no 3's in base-4 expansion.

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 5
5 6
6 8
7 9
8 10
9 16
10 17
11 18
12 20
13 21
14 22
15 24
16 25
17 26
18 32
19 33
20 34
21 36
22 37
23 38
24 40
25 41
26 42
27 64
28 65
29 66
30 68
31 69
32 70
33 72
34 73
35 74
36 80
37 81
38 82
39 84
40 85
41 86
42 88
43 89
44 90
45 96
46 97
47 98
48 100
49 101
50 102
51 104
52 105
53 106
54 128
55 129
56 130
57 132
58 133
59 134
60 136
61 137
62 138

List of values

[0, 1, 2, 4, 5, 6, 8, 9, 10, 16, 17, 18, 20, 21, 22, 24, 25, 26, 32, 33, 34, 36, 37, 38, 40, 41, 42, 64, 65, 66, 68, 69, 70, 72, 73, 74, 80, 81, 82, 84, 85, 86, 88, 89, 90, 96, 97, 98, 100, 101, 102, 104, 105, 106, 128, 129, 130, 132, 133, 134, 136, 137, 138]