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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.

A151569 a(0)=1, a(1)=2; a(2^i+j)=2*a(j)+a(j+1) for 0 <= j < 2^i.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 4
5 8
6 16
7 20
8 4
9 8
10 16
11 20
12 16
13 32
14 52
15 44
16 4
17 8
18 16
19 20
20 16
21 32
22 52
23 44
24 16
25 32
26 52
27 56
28 64
29 116
30 148
31 92
32 4
33 8
34 16
35 20
36 16
37 32
38 52
39 44
40 16
41 32
42 52
43 56
44 64
45 116
46 148
47 92
48 16
49 32
50 52
51 56
52 64
53 116
54 148
55 104
56 64
57 116
58 160
59 176
60 244
61 380
62 388
63 188
64 4
65 8
66 16
67 20
68 16
69 32
70 52

List of values

[1, 2, 4, 8, 4, 8, 16, 20, 4, 8, 16, 20, 16, 32, 52, 44, 4, 8, 16, 20, 16, 32, 52, 44, 16, 32, 52, 56, 64, 116, 148, 92, 4, 8, 16, 20, 16, 32, 52, 44, 16, 32, 52, 56, 64, 116, 148, 92, 16, 32, 52, 56, 64, 116, 148, 104, 64, 116, 160, 176, 244, 380, 388, 188, 4, 8, 16, 20, 16, 32, 52]

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