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.

A277918 Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 4", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 2
2 4
3 10
4 16
5 40
6 68
7 170
8 256
9 640
10 1088
11 2720
12 4112
13 10280
14 17476
15 43690
16 65536
17 163840
18 278528
19 696320
20 1052672
21 2631680
22 4473856
23 11184640
24 16777472
25 41943680
26 71304256
27 178260640
28 269488144
29 673720360
30 1145324612
31 2863311530
32 4294967296
33 10737418240

List of values

[1, 2, 4, 10, 16, 40, 68, 170, 256, 640, 1088, 2720, 4112, 10280, 17476, 43690, 65536, 163840, 278528, 696320, 1052672, 2631680, 4473856, 11184640, 16777472, 41943680, 71304256, 178260640, 269488144, 673720360, 1145324612, 2863311530, 4294967296, 10737418240]