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.

A256530 Number of ON cells at n-th stage in simple 2-dimensional cellular automaton (see Comments lines for definition).

Table of values

n a(n)
0 0
1 1
2 9
3 21
4 49
5 61
6 97
7 157
8 225
9 237
10 273
11 333
12 417
13 525
14 657
15 813
16 961
17 973
18 1009
19 1069
20 1153
21 1261
22 1393
23 1549
24 1729
25 1933
26 2161
27 2413
28 2689
29 2989
30 3313
31 3661
32 3969
33 3981
34 4017
35 4077
36 4161
37 4269
38 4401
39 4557
40 4737
41 4941
42 5169
43 5421
44 5697
45 5997
46 6321
47 6669
48 7041
49 7437
50 7857
51 8301
52 8769
53 9261
54 9777
55 10317
56 10881
57 11469

List of values

[0, 1, 9, 21, 49, 61, 97, 157, 225, 237, 273, 333, 417, 525, 657, 813, 961, 973, 1009, 1069, 1153, 1261, 1393, 1549, 1729, 1933, 2161, 2413, 2689, 2989, 3313, 3661, 3969, 3981, 4017, 4077, 4161, 4269, 4401, 4557, 4737, 4941, 5169, 5421, 5697, 5997, 6321, 6669, 7041, 7437, 7857, 8301, 8769, 9261, 9777, 10317, 10881, 11469]

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

Content is available under The OEIS End-User License Agreement.