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.

A323830 a(0) = 1; thereafter a(n) is obtained by doubling a(n-1) and repeatedly deleting any string of identical digits.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 128
8 256
9 512
10 1024
11 2048
12 4096
13 8192
14 16384
15 32768
16 636
17 1272
18 25
19 50
20 1
21 2
22 4
23 8
24 16
25 32
26 64
27 128
28 256
29 512
30 1024
31 2048
32 4096
33 8192
34 16384
35 32768
36 636
37 1272
38 25
39 50
40 1
41 2
42 4
43 8
44 16
45 32
46 64
47 128
48 256
49 512
50 1024
51 2048
52 4096
53 8192
54 16384
55 32768
56 636
57 1272
58 25
59 50

List of values

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 636, 1272, 25, 50, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 636, 1272, 25, 50, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 636, 1272, 25, 50]