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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.

A178729 a(n) = n XOR 3n, where XOR is bitwise XOR.

Table of values

n a(n)
0 0
1 2
2 4
3 10
4 8
5 10
6 20
7 18
8 16
9 18
10 20
11 42
12 40
13 42
14 36
15 34
16 32
17 34
18 36
19 42
20 40
21 42
22 84
23 82
24 80
25 82
26 84
27 74
28 72
29 74
30 68
31 66
32 64
33 66
34 68
35 74
36 72
37 74
38 84
39 82
40 80
41 82
42 84
43 170
44 168
45 170
46 164
47 162
48 160
49 162
50 164
51 170
52 168
53 170
54 148
55 146
56 144
57 146
58 148
59 138
60 136
61 138
62 132
63 130

List of values

[0, 2, 4, 10, 8, 10, 20, 18, 16, 18, 20, 42, 40, 42, 36, 34, 32, 34, 36, 42, 40, 42, 84, 82, 80, 82, 84, 74, 72, 74, 68, 66, 64, 66, 68, 74, 72, 74, 84, 82, 80, 82, 84, 170, 168, 170, 164, 162, 160, 162, 164, 170, 168, 170, 148, 146, 144, 146, 148, 138, 136, 138, 132, 130]

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

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