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.

A378447 Difference between {the number of distinct sums of distinct divisors of n} and {the number of distinct sums of distinct proper divisors of n}.

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 2
6 6
7 2
8 8
9 4
10 8
11 2
12 12
13 2
14 8
15 8
16 16
17 2
18 18
19 2
20 20
21 8
22 8
23 2
24 24
25 4
26 8
27 8
28 28
29 2
30 30
31 2
32 32
33 8
34 8
35 8
36 36
37 2
38 8
39 8
40 40
41 2
42 42
43 2
44 32
45 28
46 8
47 2
48 48
49 4
50 32
51 8
52 32
53 2
54 54
55 8
56 56
57 8
58 8
59 2
60 60
61 2
62 8
63 30
64 64
65 8
66 66
67 2
68 32
69 8
70 70
71 2
72 72
73 2
74 8
75 32
76 32
77 8
78 78
79 2
80 80
81 16
82 8
83 2
84 84
85 8
86 8
87 8
88 88
89 2
90 90
91 8
92 32
93 8
94 8
95 8

List of values

[1, 2, 2, 4, 2, 6, 2, 8, 4, 8, 2, 12, 2, 8, 8, 16, 2, 18, 2, 20, 8, 8, 2, 24, 4, 8, 8, 28, 2, 30, 2, 32, 8, 8, 8, 36, 2, 8, 8, 40, 2, 42, 2, 32, 28, 8, 2, 48, 4, 32, 8, 32, 2, 54, 8, 56, 8, 8, 2, 60, 2, 8, 30, 64, 8, 66, 2, 32, 8, 70, 2, 72, 2, 8, 32, 32, 8, 78, 2, 80, 16, 8, 2, 84, 8, 8, 8, 88, 2, 90, 8, 32, 8, 8, 8]