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.

A106556 Smallest number formed by concatenating the two factors of a semiprime.

Table of values

n a(n)
1 22
2 23
3 33
4 25
5 27
6 35
7 37
8 112
9 55
10 132
11 113
12 172
13 57
14 192
15 133
16 223
17 77
18 173
19 115
20 193
21 229
22 231
23 135
24 233
25 237
26 117
27 241
28 175
29 243
30 293
31 137
32 313
33 247
34 195
35 253
36 337
37 235
38 259
39 177
40 1111
41 261
42 341
43 343
44 197
45 267
46 347
47 271
48 1113
49 295
50 273
51 315
52 279
53 353

List of values

[22, 23, 33, 25, 27, 35, 37, 112, 55, 132, 113, 172, 57, 192, 133, 223, 77, 173, 115, 193, 229, 231, 135, 233, 237, 117, 241, 175, 243, 293, 137, 313, 247, 195, 253, 337, 235, 259, 177, 1111, 261, 341, 343, 197, 267, 347, 271, 1113, 295, 273, 315, 279, 353]

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

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