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.

A256739 Unique sequence satisfying SumXOR_{d divides n} a(d) = n for any n>0, where SumXOR is the analog of summation under the binary XOR operation.

Table of values

n a(n)
1 1
2 3
3 2
4 6
5 4
6 6
7 6
8 12
9 10
10 12
11 10
12 12
13 12
14 10
15 8
16 24
17 16
18 30
19 18
20 24
21 16
22 30
23 22
24 24
25 28
26 20
27 18
28 20
29 28
30 24
31 30
32 48
33 40
34 48
35 32
36 60
37 36
38 54
39 40
40 48
41 40
42 48
43 42
44 60
45 40
46 58
47 46
48 48
49 54
50 36
51 32
52 40
53 52
54 54
55 56
56 40
57 40
58 36
59 58
60 48
61 60
62 34
63 32
64 96
65 72
66 120
67 66

List of values

[1, 3, 2, 6, 4, 6, 6, 12, 10, 12, 10, 12, 12, 10, 8, 24, 16, 30, 18, 24, 16, 30, 22, 24, 28, 20, 18, 20, 28, 24, 30, 48, 40, 48, 32, 60, 36, 54, 40, 48, 40, 48, 42, 60, 40, 58, 46, 48, 54, 36, 32, 40, 52, 54, 56, 40, 40, 36, 58, 48, 60, 34, 32, 96, 72, 120, 66]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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