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.

A108638 Semiprime plus its digits is semiprime.

Table of values

n a(n)
1 15
2 22
3 26
4 33
5 38
6 39
7 49
8 51
9 55
10 57
11 74
12 77
13 115
14 123
15 129
16 134
17 145
18 155
19 161
20 169
21 178
22 187
23 202
24 206
25 213
26 214
27 221
28 237
29 254
30 265
31 274
32 278
33 291
34 299
35 301
36 303
37 309
38 321
39 327
40 335
41 361
42 371
43 377
44 381
45 382
46 386
47 411
48 437
49 445
50 466
51 478
52 485
53 497
54 505

List of values

[15, 22, 26, 33, 38, 39, 49, 51, 55, 57, 74, 77, 115, 123, 129, 134, 145, 155, 161, 169, 178, 187, 202, 206, 213, 214, 221, 237, 254, 265, 274, 278, 291, 299, 301, 303, 309, 321, 327, 335, 361, 371, 377, 381, 382, 386, 411, 437, 445, 466, 478, 485, 497, 505]