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.

A135355 Semiprimes with digits in ascending order.

Table of values

n a(n)
1 4
2 6
3 9
4 14
5 15
6 25
7 26
8 34
9 35
10 38
11 39
12 46
13 49
14 57
15 58
16 69
17 123
18 129
19 134
20 145
21 146
22 158
23 159
24 169
25 178
26 235
27 237
28 247
29 249
30 259
31 267
32 278
33 289
34 346
35 358
36 458
37 469
38 478
39 489
40 579
41 589
42 679
43 689
44 789
45 1234
46 1238
47 1247
48 1257
49 1267
50 1345
51 1346
52 1347
53 1349
54 1357

List of values

[4, 6, 9, 14, 15, 25, 26, 34, 35, 38, 39, 46, 49, 57, 58, 69, 123, 129, 134, 145, 146, 158, 159, 169, 178, 235, 237, 247, 249, 259, 267, 278, 289, 346, 358, 458, 469, 478, 489, 579, 589, 679, 689, 789, 1234, 1238, 1247, 1257, 1267, 1345, 1346, 1347, 1349, 1357]

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

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