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.

A235691 Semiprimes which have one or more occurrences of exactly three different digits.

Table of values

n a(n)
1 106
2 123
3 129
4 134
5 142
6 143
7 145
8 146
9 158
10 159
11 169
12 178
13 183
14 185
15 187
16 194
17 201
18 203
19 205
20 206
21 209
22 213
23 214
24 215
25 217
26 218
27 219
28 235
29 237
30 247
31 249
32 253
33 254
34 259
35 265
36 267
37 274
38 278
39 287
40 289
41 291
42 295
43 298
44 301
45 302
46 305
47 309
48 314
49 319
50 321
51 326
52 327

List of values

[106, 123, 129, 134, 142, 143, 145, 146, 158, 159, 169, 178, 183, 185, 187, 194, 201, 203, 205, 206, 209, 213, 214, 215, 217, 218, 219, 235, 237, 247, 249, 253, 254, 259, 265, 267, 274, 278, 287, 289, 291, 295, 298, 301, 302, 305, 309, 314, 319, 321, 326, 327]