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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.

A263511 Total number of ON (black) cells after n iterations of the "Rule 155" elementary cellular automaton starting with a single ON (black) cell.

Table of values

n a(n)
0 1
1 3
2 6
3 12
4 19
5 29
6 40
7 54
8 69
9 87
10 106
11 128
12 151
13 177
14 204
15 234
16 265
17 299
18 334
19 372
20 411
21 453
22 496
23 542
24 589
25 639
26 690
27 744
28 799
29 857
30 916
31 978
32 1041
33 1107
34 1174
35 1244
36 1315
37 1389
38 1464
39 1542
40 1621
41 1703
42 1786
43 1872
44 1959
45 2049
46 2140
47 2234
48 2329
49 2427

List of values

[1, 3, 6, 12, 19, 29, 40, 54, 69, 87, 106, 128, 151, 177, 204, 234, 265, 299, 334, 372, 411, 453, 496, 542, 589, 639, 690, 744, 799, 857, 916, 978, 1041, 1107, 1174, 1244, 1315, 1389, 1464, 1542, 1621, 1703, 1786, 1872, 1959, 2049, 2140, 2234, 2329, 2427]

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

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