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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.

A137462 a(n) + a(n-1) = n-th semiprime.

Table of values

n a(n)
0 1
1 3
2 3
3 6
4 4
5 10
6 5
7 16
8 6
9 19
10 7
11 26
12 8
13 27
14 11
15 28
16 18
17 31
18 20
19 35
20 22
21 36
22 26
23 39
24 30
25 44
26 33
27 49
28 36
29 50
30 37
31 54
32 39
33 55
34 40
35 66
36 45
37 70
38 48
39 71
40 50
41 72
42 51
43 78
44 55
45 79
46 62
47 80
48 63
49 82
50 64
51 91
52 67
53 92
54 69
55 97
56 72
57 105
58 73
59 110
60 75
61 112
62 82
63 119
64 83
65 120
66 85
67 121
68 88
69 125

List of values

[1, 3, 3, 6, 4, 10, 5, 16, 6, 19, 7, 26, 8, 27, 11, 28, 18, 31, 20, 35, 22, 36, 26, 39, 30, 44, 33, 49, 36, 50, 37, 54, 39, 55, 40, 66, 45, 70, 48, 71, 50, 72, 51, 78, 55, 79, 62, 80, 63, 82, 64, 91, 67, 92, 69, 97, 72, 105, 73, 110, 75, 112, 82, 119, 83, 120, 85, 121, 88, 125]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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