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.

A205728 Number of odd, nonsquare semiprimes <= n^2.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 2
6 4
7 5
8 8
9 11
10 16
11 19
12 24
13 28
14 32
15 41
16 46
17 50
18 60
19 66
20 73
21 81
22 89
23 100
24 110
25 118
26 126
27 140
28 151
29 163
30 174
31 187
32 197
33 210
34 224
35 239
36 253
37 269
38 286
39 298
40 312
41 326
42 344
43 363
44 380
45 399
46 414
47 435
48 451
49 468
50 491
51 513
52 530
53 546
54 567
55 591
56 619
57 643
58 664

List of values

[0, 0, 0, 1, 2, 4, 5, 8, 11, 16, 19, 24, 28, 32, 41, 46, 50, 60, 66, 73, 81, 89, 100, 110, 118, 126, 140, 151, 163, 174, 187, 197, 210, 224, 239, 253, 269, 286, 298, 312, 326, 344, 363, 380, 399, 414, 435, 451, 468, 491, 513, 530, 546, 567, 591, 619, 643, 664]