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.

A053821 A discrete approximation to log(n): Sum_{ d divides n } A029833(d).

Table of values

n a(n)
1 0
2 1
3 1
4 1
5 2
6 2
7 2
8 1
9 1
10 3
11 2
12 2
13 3
14 3
15 3
16 1
17 3
18 2
19 3
20 3
21 3
22 3
23 3
24 2
25 2
26 4
27 1
28 3
29 3
30 4
31 3
32 1
33 3
34 4
35 4
36 2
37 4
38 4
39 4
40 3
41 4
42 4
43 4
44 3
45 3
46 4
47 4
48 2
49 2
50 3
51 4
52 4
53 4
54 2
55 4
56 3
57 4
58 4
59 4
60 4
61 4
62 4
63 3
64 1
65 5
66 4
67 4
68 4
69 4
70 5
71 4
72 2
73 4
74 5
75 3
76 4
77 4
78 5
79 4
80 3
81 1
82 5
83 4
84 4
85 5
86 5
87 4
88 3
89 4
90 4
91 5
92 4
93 4

List of values

[0, 1, 1, 1, 2, 2, 2, 1, 1, 3, 2, 2, 3, 3, 3, 1, 3, 2, 3, 3, 3, 3, 3, 2, 2, 4, 1, 3, 3, 4, 3, 1, 3, 4, 4, 2, 4, 4, 4, 3, 4, 4, 4, 3, 3, 4, 4, 2, 2, 3, 4, 4, 4, 2, 4, 3, 4, 4, 4, 4, 4, 4, 3, 1, 5, 4, 4, 4, 4, 5, 4, 2, 4, 5, 3, 4, 4, 5, 4, 3, 1, 5, 4, 4, 5, 5, 4, 3, 4, 4, 5, 4, 4]