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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.

A122488 Numbers k such that 1 + 2k + 3k^2 is semiprime.

Table of values

n a(n)
1 1
2 3
3 4
4 5
5 6
6 8
7 9
8 10
9 11
10 15
11 20
12 21
13 22
14 29
15 30
16 33
17 35
18 36
19 40
20 42
21 45
22 47
23 48
24 50
25 54
26 57
27 59
28 60
29 64
30 66
31 69
32 72
33 75
34 76
35 77
36 78
37 80
38 81
39 82
40 84
41 86
42 89
43 95
44 96
45 100
46 102
47 108
48 110
49 111
50 112
51 113
52 116
53 123
54 125
55 130
56 131
57 132
58 134
59 136
60 143
61 146
62 147
63 148
64 152
65 153

List of values

[1, 3, 4, 5, 6, 8, 9, 10, 11, 15, 20, 21, 22, 29, 30, 33, 35, 36, 40, 42, 45, 47, 48, 50, 54, 57, 59, 60, 64, 66, 69, 72, 75, 76, 77, 78, 80, 81, 82, 84, 86, 89, 95, 96, 100, 102, 108, 110, 111, 112, 113, 116, 123, 125, 130, 131, 132, 134, 136, 143, 146, 147, 148, 152, 153]

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

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