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.

A286521 Decimal representation of the diagonal from the origin to the corner (or of the corner to the origin) of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 659", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 3
2 5
3 15
4 31
5 63
6 127
7 255
8 511
9 1023
10 2047
11 4095
12 8191
13 16383
14 32767
15 65535
16 131071
17 262143
18 524287
19 1048575
20 2097151
21 4194303
22 8388607
23 16777215
24 33554431
25 67108863
26 134217727
27 268435455
28 536870911
29 1073741823
30 2147483647
31 4294967295
32 8589934591

List of values

[1, 3, 5, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575, 2097151, 4194303, 8388607, 16777215, 33554431, 67108863, 134217727, 268435455, 536870911, 1073741823, 2147483647, 4294967295, 8589934591]