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.

A205726 Number of semiprimes <= n^2.

Table of values

n a(n)
1 0
2 1
3 3
4 6
5 9
6 13
7 17
8 22
9 26
10 34
11 40
12 48
13 56
14 62
15 75
16 82
17 90
18 103
19 114
20 126
21 135
22 149
23 164
24 179
25 190
26 202
27 220
28 236
29 253
30 270
31 289
32 304
33 320
34 340
35 360
36 381
37 404
38 425
39 443
40 462
41 484
42 508
43 533
44 556
45 581
46 604
47 634
48 655
49 678
50 709
51 738
52 761
53 783
54 813
55 846
56 881

List of values

[0, 1, 3, 6, 9, 13, 17, 22, 26, 34, 40, 48, 56, 62, 75, 82, 90, 103, 114, 126, 135, 149, 164, 179, 190, 202, 220, 236, 253, 270, 289, 304, 320, 340, 360, 381, 404, 425, 443, 462, 484, 508, 533, 556, 581, 604, 634, 655, 678, 709, 738, 761, 783, 813, 846, 881]