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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.

A140114 Number of semiprimes strictly between n^2 and (n+1)^2.

Table of values

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

List of values

[0, 0, 1, 3, 2, 4, 3, 5, 4, 8, 5, 8, 7, 6, 13, 7, 7, 13, 10, 12, 9, 14, 14, 15, 11, 12, 18, 16, 16, 17, 18, 15, 16, 20, 20, 21, 22, 21, 18, 19, 21, 24, 24, 23, 25, 23, 29, 21, 23, 31, 29, 23, 21, 30, 33, 35, 34, 27, 30, 28, 29, 32, 30, 31, 36, 36, 36, 36, 36, 43, 24, 40, 38, 40, 39]

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