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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.

A295907 a(n) = SumXOR_{k=1..n} A296099(k), where SumXOR is the analog of summation under the binary XOR operation.

Table of values

n a(n)
1 1
2 2
3 0
4 4
5 15
6 6
7 0
8 8
9 27
10 30
11 11
12 12
13 0
14 14
15 30
16 0
17 17
18 54
19 57
20 20
21 0
22 22
23 46
24 0
25 25
26 78
27 81
28 112
29 58
30 30
31 62
32 0
33 66
34 34
35 0
36 72
37 37
38 0
39 78
40 120
41 82
42 126
43 86
44 0
45 90
46 46
47 94
48 0
49 49
50 100
51 0
52 52
53 159
54 162
55 220
56 224
57 171
58 232
59 177
60 240
61 183
62 186
63 252
64 128
65 0

List of values

[1, 2, 0, 4, 15, 6, 0, 8, 27, 30, 11, 12, 0, 14, 30, 0, 17, 54, 57, 20, 0, 22, 46, 0, 25, 78, 81, 112, 58, 30, 62, 0, 66, 34, 0, 72, 37, 0, 78, 120, 82, 126, 86, 0, 90, 46, 94, 0, 49, 100, 0, 52, 159, 162, 220, 224, 171, 232, 177, 240, 183, 186, 252, 128, 0]

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