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.

A046446 Nonprimes whose prime factors contain only odd digits.

Table of values

n a(n)
1 1
2 9
3 15
4 21
5 25
6 27
7 33
8 35
9 39
10 45
11 49
12 51
13 55
14 57
15 63
16 65
17 75
18 77
19 81
20 85
21 91
22 93
23 95
24 99
25 105
26 111
27 117
28 119
29 121
30 125
31 133
32 135
33 143
34 147
35 153
36 155
37 159
38 165
39 169
40 171
41 175
42 177
43 185
44 187
45 189
46 195
47 209
48 213
49 217
50 219
51 221
52 225
53 231
54 237
55 243
56 245
57 247
58 255

List of values

[1, 9, 15, 21, 25, 27, 33, 35, 39, 45, 49, 51, 55, 57, 63, 65, 75, 77, 81, 85, 91, 93, 95, 99, 105, 111, 117, 119, 121, 125, 133, 135, 143, 147, 153, 155, 159, 165, 169, 171, 175, 177, 185, 187, 189, 195, 209, 213, 217, 219, 221, 225, 231, 237, 243, 245, 247, 255]