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.

A067824 a(1) = 1; for n > 1, a(n) = 1 + Sum_{0 < d < n, d|n} a(d).

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 6
11 2
12 16
13 2
14 6
15 6
16 16
17 2
18 16
19 2
20 16
21 6
22 6
23 2
24 40
25 4
26 6
27 8
28 16
29 2
30 26
31 2
32 32
33 6
34 6
35 6
36 52
37 2
38 6
39 6
40 40
41 2
42 26
43 2
44 16
45 16
46 6
47 2
48 96
49 4
50 16
51 6
52 16
53 2
54 40
55 6
56 40
57 6
58 6
59 2
60 88
61 2
62 6
63 16
64 64
65 6
66 26
67 2
68 16
69 6
70 26
71 2
72 152
73 2
74 6
75 16
76 16
77 6
78 26
79 2
80 96
81 16
82 6
83 2
84 88
85 6
86 6
87 6
88 40
89 2
90 88
91 6
92 16
93 6
94 6
95 6
96 224
97 2
98 16
99 16
100 52

List of values

[1, 2, 2, 4, 2, 6, 2, 8, 4, 6, 2, 16, 2, 6, 6, 16, 2, 16, 2, 16, 6, 6, 2, 40, 4, 6, 8, 16, 2, 26, 2, 32, 6, 6, 6, 52, 2, 6, 6, 40, 2, 26, 2, 16, 16, 6, 2, 96, 4, 16, 6, 16, 2, 40, 6, 40, 6, 6, 2, 88, 2, 6, 16, 64, 6, 26, 2, 16, 6, 26, 2, 152, 2, 6, 16, 16, 6, 26, 2, 96, 16, 6, 2, 88, 6, 6, 6, 40, 2, 88, 6, 16, 6, 6, 6, 224, 2, 16, 16, 52]