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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.

A344497 Matching number of the divisor graph of {1,...,n}.

Table of values

n a(n)
1 0
2 1
3 1
4 2
5 2
6 3
7 3
8 3
9 4
10 5
11 5
12 5
13 5
14 6
15 7
16 7
17 7
18 8
19 8
20 8
21 9
22 10
23 10
24 10
25 11
26 12
27 12
28 13
29 13
30 13
31 13
32 14
33 14
34 15
35 16
36 16
37 16
38 17
39 17
40 18
41 18
42 19
43 19
44 19
45 20
46 21
47 21
48 21
49 21
50 22
51 23
52 23
53 23
54 24
55 24
56 25
57 25
58 26
59 26
60 26
61 26
62 27
63 28
64 28
65 28
66 29
67 29
68 30
69 30
70 31
71 31

List of values

[0, 1, 1, 2, 2, 3, 3, 3, 4, 5, 5, 5, 5, 6, 7, 7, 7, 8, 8, 8, 9, 10, 10, 10, 11, 12, 12, 13, 13, 13, 13, 14, 14, 15, 16, 16, 16, 17, 17, 18, 18, 19, 19, 19, 20, 21, 21, 21, 21, 22, 23, 23, 23, 24, 24, 25, 25, 26, 26, 26, 26, 27, 28, 28, 28, 29, 29, 30, 30, 31, 31]

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

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