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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.

A265223 Total number of OFF (white) cells after n iterations of the "Rule 150" elementary cellular automaton starting with a single ON (black) cell.

Table of values

n a(n)
0 0
1 0
2 2
3 4
4 10
5 12
6 20
7 24
8 38
9 48
10 60
11 68
12 88
13 100
14 118
15 128
16 158
17 184
18 212
19 236
20 268
21 284
22 314
23 328
24 372
25 408
26 446
27 476
28 522
29 548
30 588
31 608
32 670
33 728
34 788
35 844
36 908
37 956
38 1018
39 1064
40 1136
41 1192
42 1250
43 1292
44 1366
45 1412
46 1472
47 1504
48 1596
49 1680
50 1766
51 1844

List of values

[0, 0, 2, 4, 10, 12, 20, 24, 38, 48, 60, 68, 88, 100, 118, 128, 158, 184, 212, 236, 268, 284, 314, 328, 372, 408, 446, 476, 522, 548, 588, 608, 670, 728, 788, 844, 908, 956, 1018, 1064, 1136, 1192, 1250, 1292, 1366, 1412, 1472, 1504, 1596, 1680, 1766, 1844]

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

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