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.

A328727 Nonnegative numbers whose base-3 expansion has no two consecutive nonzero digits.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 6
6 9
7 10
8 11
9 18
10 19
11 20
12 27
13 28
14 29
15 30
16 33
17 54
18 55
19 56
20 57
21 60
22 81
23 82
24 83
25 84
26 87
27 90
28 91
29 92
30 99
31 100
32 101
33 162
34 163
35 164
36 165
37 168
38 171
39 172
40 173
41 180
42 181
43 182
44 243
45 244
46 245
47 246
48 249
49 252
50 253
51 254
52 261
53 262
54 263
55 270
56 271
57 272
58 273
59 276

List of values

[0, 1, 2, 3, 6, 9, 10, 11, 18, 19, 20, 27, 28, 29, 30, 33, 54, 55, 56, 57, 60, 81, 82, 83, 84, 87, 90, 91, 92, 99, 100, 101, 162, 163, 164, 165, 168, 171, 172, 173, 180, 181, 182, 243, 244, 245, 246, 249, 252, 253, 254, 261, 262, 263, 270, 271, 272, 273, 276]