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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.

A151706 a(0)=1, a(1)=0; a(2^i+j) = 2*a(j) + 2*a(j+1) for 0 <= j < 2^i.

Table of values

n a(n)
0 1
1 0
2 2
3 4
4 2
5 4
6 12
7 12
8 2
9 4
10 12
11 12
12 12
13 32
14 48
15 28
16 2
17 4
18 12
19 12
20 12
21 32
22 48
23 28
24 12
25 32
26 48
27 48
28 88
29 160
30 152
31 60
32 2
33 4
34 12
35 12
36 12
37 32
38 48
39 28
40 12
41 32
42 48
43 48
44 88
45 160
46 152
47 60
48 12
49 32
50 48
51 48
52 88
53 160
54 152
55 80
56 88
57 160
58 192
59 272
60 496
61 624
62 424
63 124
64 2
65 4
66 12
67 12
68 12
69 32
70 48

List of values

[1, 0, 2, 4, 2, 4, 12, 12, 2, 4, 12, 12, 12, 32, 48, 28, 2, 4, 12, 12, 12, 32, 48, 28, 12, 32, 48, 48, 88, 160, 152, 60, 2, 4, 12, 12, 12, 32, 48, 28, 12, 32, 48, 48, 88, 160, 152, 60, 12, 32, 48, 48, 88, 160, 152, 80, 88, 160, 192, 272, 496, 624, 424, 124, 2, 4, 12, 12, 12, 32, 48]

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