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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.

A365399 Length of the longest subsequence of 1, ..., n on which the number of divisors function tau A000005 is nondecreasing.

Table of values

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

List of values

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

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

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