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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.

A160720 Number of "ON" cells at n-th stage in 2-dimensional cellular automaton (see Comments for precise definition).

Table of values

n a(n)
0 0
1 1
2 5
3 9
4 21
5 25
6 37
7 49
8 77
9 81
10 93
11 105
12 133
13 145
14 173
15 201
16 261
17 265
18 277
19 289
20 317
21 329
22 357
23 385
24 445
25 457
26 485
27 513
28 573
29 601
30 661
31 721
32 845
33 849
34 861
35 873
36 901
37 913
38 941
39 969
40 1029
41 1041
42 1069
43 1097
44 1157
45 1185
46 1245
47 1305
48 1429
49 1441
50 1469
51 1497

List of values

[0, 1, 5, 9, 21, 25, 37, 49, 77, 81, 93, 105, 133, 145, 173, 201, 261, 265, 277, 289, 317, 329, 357, 385, 445, 457, 485, 513, 573, 601, 661, 721, 845, 849, 861, 873, 901, 913, 941, 969, 1029, 1041, 1069, 1097, 1157, 1185, 1245, 1305, 1429, 1441, 1469, 1497]

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

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