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.

A245383 Numbers n whose product of decimal digits is a semiprime.

Table of values

n a(n)
1 4
2 6
3 9
4 14
5 16
6 19
7 22
8 23
9 25
10 27
11 32
12 33
13 35
14 37
15 41
16 52
17 53
18 55
19 57
20 61
21 72
22 73
23 75
24 77
25 91
26 114
27 116
28 119
29 122
30 123
31 125
32 127
33 132
34 133
35 135
36 137
37 141
38 152
39 153
40 155
41 157
42 161
43 172
44 173
45 175
46 177
47 191
48 212
49 213
50 215
51 217
52 221
53 231
54 251
55 271
56 312
57 313
58 315

List of values

[4, 6, 9, 14, 16, 19, 22, 23, 25, 27, 32, 33, 35, 37, 41, 52, 53, 55, 57, 61, 72, 73, 75, 77, 91, 114, 116, 119, 122, 123, 125, 127, 132, 133, 135, 137, 141, 152, 153, 155, 157, 161, 172, 173, 175, 177, 191, 212, 213, 215, 217, 221, 231, 251, 271, 312, 313, 315]