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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.

A269160 Formula for Wolfram's Rule 30 cellular automaton: a(n) = n XOR (2n OR 4n).

Table of values

n a(n)
0 0
1 7
2 14
3 13
4 28
5 27
6 26
7 25
8 56
9 63
10 54
11 53
12 52
13 51
14 50
15 49
16 112
17 119
18 126
19 125
20 108
21 107
22 106
23 105
24 104
25 111
26 102
27 101
28 100
29 99
30 98
31 97
32 224
33 231
34 238
35 237
36 252
37 251
38 250
39 249
40 216
41 223
42 214
43 213
44 212
45 211
46 210
47 209
48 208
49 215
50 222
51 221
52 204
53 203
54 202
55 201
56 200
57 207
58 198
59 197
60 196
61 195
62 194
63 193
64 448
65 455
66 462

List of values

[0, 7, 14, 13, 28, 27, 26, 25, 56, 63, 54, 53, 52, 51, 50, 49, 112, 119, 126, 125, 108, 107, 106, 105, 104, 111, 102, 101, 100, 99, 98, 97, 224, 231, 238, 237, 252, 251, 250, 249, 216, 223, 214, 213, 212, 211, 210, 209, 208, 215, 222, 221, 204, 203, 202, 201, 200, 207, 198, 197, 196, 195, 194, 193, 448, 455, 462]