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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.

A362089 The base-3 expansion of a(n) is obtained by inserting a zero before each nonzero digit of the base-3 expansion of n.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 10
5 11
6 6
7 19
8 20
9 9
10 28
11 29
12 30
13 91
14 92
15 33
16 100
17 101
18 18
19 55
20 56
21 57
22 172
23 173
24 60
25 181
26 182
27 27
28 82
29 83
30 84
31 253
32 254
33 87
34 262
35 263
36 90
37 271
38 272
39 273
40 820
41 821
42 276
43 829
44 830
45 99
46 298
47 299
48 300
49 901
50 902
51 303
52 910
53 911
54 54
55 163
56 164
57 165
58 496

List of values

[0, 1, 2, 3, 10, 11, 6, 19, 20, 9, 28, 29, 30, 91, 92, 33, 100, 101, 18, 55, 56, 57, 172, 173, 60, 181, 182, 27, 82, 83, 84, 253, 254, 87, 262, 263, 90, 271, 272, 273, 820, 821, 276, 829, 830, 99, 298, 299, 300, 901, 902, 303, 910, 911, 54, 163, 164, 165, 496]

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

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