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.

A307037 The unitary analog of the alternating sum-of-divisors function (A206369).

Table of values

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

List of values

[1, 1, 2, 5, 4, 2, 6, 7, 10, 4, 10, 10, 12, 6, 8, 17, 16, 10, 18, 20, 12, 10, 22, 14, 26, 12, 26, 30, 28, 8, 30, 31, 20, 16, 24, 50, 36, 18, 24, 28, 40, 12, 42, 50, 40, 22, 46, 34, 50, 26, 32, 60, 52, 26, 40, 42, 36, 28, 58, 40, 60, 30, 60, 65, 48, 20, 66, 80]

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

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