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.

A110607 Numbers n whose base 9 representations, interpreted as base 10 integers, are semiprimes.

Table of values

n a(n)
1 4
2 6
3 9
4 13
5 14
6 19
7 20
8 23
9 24
10 30
11 31
12 32
13 35
14 42
15 46
16 50
17 52
18 53
19 56
20 59
21 67
22 70
23 74
24 77
25 78
26 79
27 87
28 91
29 95
30 98
31 100
32 101
33 102
34 111
35 112
36 118
37 119
38 120
39 122
40 123
41 131
42 134
43 136
44 141
45 151
46 152
47 156
48 158
49 160
50 163
51 164
52 165
53 167
54 168
55 174
56 175
57 176
58 178
59 179
60 181

List of values

[4, 6, 9, 13, 14, 19, 20, 23, 24, 30, 31, 32, 35, 42, 46, 50, 52, 53, 56, 59, 67, 70, 74, 77, 78, 79, 87, 91, 95, 98, 100, 101, 102, 111, 112, 118, 119, 120, 122, 123, 131, 134, 136, 141, 151, 152, 156, 158, 160, 163, 164, 165, 167, 168, 174, 175, 176, 178, 179, 181]

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

Content is available under The OEIS End-User License Agreement.