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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.

A074796 Number of numbers k <= n such that tau(k) == 2 (mod 3) where tau(k) = A000005(k) is the number of divisors of k.

Table of values

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

List of values

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

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