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.

A242937 Numbers n such that n*prime(n) + (n+1)*(prime(n+1)) + (n+2)*(prime(n+2)) is semiprime.

Table of values

n a(n)
1 2
2 4
3 7
4 8
5 9
6 11
7 14
8 16
9 18
10 19
11 26
12 32
13 36
14 38
15 42
16 44
17 48
18 50
19 53
20 71
21 74
22 78
23 79
24 82
25 86
26 94
27 95
28 98
29 104
30 108
31 111
32 114
33 118
34 122
35 124
36 126
37 136
38 141
39 146
40 154
41 162
42 166
43 172
44 174
45 178
46 180
47 184
48 186
49 189
50 190
51 197
52 200
53 203
54 206
55 216
56 219
57 221
58 223
59 224

List of values

[2, 4, 7, 8, 9, 11, 14, 16, 18, 19, 26, 32, 36, 38, 42, 44, 48, 50, 53, 71, 74, 78, 79, 82, 86, 94, 95, 98, 104, 108, 111, 114, 118, 122, 124, 126, 136, 141, 146, 154, 162, 166, 172, 174, 178, 180, 184, 186, 189, 190, 197, 200, 203, 206, 216, 219, 221, 223, 224]

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

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