A122108 - cp's OEIS frontend

A122108 a(n)=number of 1's ("live" cells) at stage n of a 2-dimensional cellular automaton evolving by the rule: 1 if N+S+E+W is 1 or 2, else 0, starting from a single live cell.

n	a(n)
1	1
2	4
3	8
4	12
5	20
6	24
7	44
8	28
9	52
10	56
11	104
12	56
13	104
14	112
15	212
16	60
17	116
18	120
19	232
20	120
21	232
22	240
23	464
24	120
25	232
26	240
27	464
28	240
29	464
30	480
31	932
32	124
33	244
34	248
35	488
36	248
37	488
38	496
39	976
40	248
41	488
42	496
43	976
44	496
45	976
46	992
47	1952
48	248
49	488
50	496
51	976
52	496
53	976
54	992
55	1952

[1, 4, 8, 12, 20, 24, 44, 28, 52, 56, 104, 56, 104, 112, 212, 60, 116, 120, 232, 120, 232, 240, 464, 120, 232, 240, 464, 240, 464, 480, 932, 124, 244, 248, 488, 248, 488, 496, 976, 248, 488, 496, 976, 496, 976, 992, 1952, 248, 488, 496, 976, 496, 976, 992, 1952]

cp's OEIS Frontend

A122108 a(n)=number of 1's ("live" cells) at stage n of a 2-dimensional cellular automaton evolving by the rule: 1 if N+S+E+W is 1 or 2, else 0, starting from a single live cell.

Table of values

List of values