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.

A178133 Number of odd semiprimes between consecutive squares.

Table of values

n a(n)
1 0
2 0
3 1
4 1
5 2
6 1
7 3
8 3
9 5
10 3
11 5
12 4
13 4
14 9
15 5
16 4
17 10
18 6
19 7
20 8
21 8
22 11
23 10
24 8
25 8
26 14
27 11
28 12
29 11
30 13
31 10
32 13
33 14
34 15
35 14
36 16
37 17
38 12
39 14
40 14
41 18
42 19
43 17
44 19
45 15
46 21
47 16
48 17
49 23
50 22
51 17
52 16
53 21
54 24
55 28
56 24
57 21
58 23
59 20
60 24
61 22
62 24
63 21
64 27
65 28
66 28
67 26
68 28
69 32
70 19
71 31
72 29
73 27
74 29
75 28
76 22
77 37

List of values

[0, 0, 1, 1, 2, 1, 3, 3, 5, 3, 5, 4, 4, 9, 5, 4, 10, 6, 7, 8, 8, 11, 10, 8, 8, 14, 11, 12, 11, 13, 10, 13, 14, 15, 14, 16, 17, 12, 14, 14, 18, 19, 17, 19, 15, 21, 16, 17, 23, 22, 17, 16, 21, 24, 28, 24, 21, 23, 20, 24, 22, 24, 21, 27, 28, 28, 26, 28, 32, 19, 31, 29, 27, 29, 28, 22, 37]