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.

A343703 Numbers k such that k=x*y for some x and y such that x+y and the concatenation of x and y are both prime.

Table of values

n a(n)
1 1
2 4
3 6
4 10
5 12
6 18
7 22
8 24
9 28
10 30
11 40
12 42
13 46
14 48
15 52
16 54
17 58
18 60
19 66
20 70
21 72
22 76
23 78
24 82
25 84
26 88
27 90
28 102
29 106
30 112
31 114
32 126
33 130
34 132
35 136
36 138
37 142
38 148
39 150
40 154
41 156
42 162
43 168
44 172
45 180
46 184
47 186
48 190
49 192
50 196
51 198
52 204
53 208
54 210
55 220
56 222
57 228
58 232
59 238
60 246
61 252
62 258
63 262
64 268
65 274

List of values

[1, 4, 6, 10, 12, 18, 22, 24, 28, 30, 40, 42, 46, 48, 52, 54, 58, 60, 66, 70, 72, 76, 78, 82, 84, 88, 90, 102, 106, 112, 114, 126, 130, 132, 136, 138, 142, 148, 150, 154, 156, 162, 168, 172, 180, 184, 186, 190, 192, 196, 198, 204, 208, 210, 220, 222, 228, 232, 238, 246, 252, 258, 262, 268, 274]

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

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