cp's OEIS Frontend

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.

A160722 Number of "ON" cells at n-th stage in a certain 2-dimensional cellular automaton based on Sierpinski triangles (see Comments for precise definition).

Table of values

n a(n)
0 0
1 1
2 5
3 9
4 19
5 23
6 33
7 43
8 65
9 69
10 79
11 89
12 111
13 121
14 143
15 165
16 211
17 215
18 225
19 235
20 257
21 267
22 289
23 311
24 357
25 367
26 389
27 411
28 457
29 479
30 525
31 571
32 665
33 669
34 679
35 689
36 711
37 721
38 743
39 765
40 811
41 821
42 843
43 865
44 911
45 933
46 979
47 1025
48 1119
49 1129
50 1151
51 1173
52 1219
53 1241

List of values

[0, 1, 5, 9, 19, 23, 33, 43, 65, 69, 79, 89, 111, 121, 143, 165, 211, 215, 225, 235, 257, 267, 289, 311, 357, 367, 389, 411, 457, 479, 525, 571, 665, 669, 679, 689, 711, 721, 743, 765, 811, 821, 843, 865, 911, 933, 979, 1025, 1119, 1129, 1151, 1173, 1219, 1241]