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.

A154893 Numbers whose number of proper divisors is not a prime number.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 7
6 11
7 13
8 16
9 17
10 19
11 23
12 29
13 31
14 36
15 37
16 41
17 43
18 47
19 48
20 53
21 59
22 61
23 64
24 67
25 71
26 73
27 79
28 80
29 81
30 83
31 89
32 97
33 100
34 101
35 103
36 107
37 109
38 112
39 113
40 120
41 127
42 131
43 137
44 139
45 144
46 149
47 151
48 157
49 162
50 163
51 167
52 168
53 173
54 176
55 179
56 181
57 191
58 193
59 196
60 197
61 199

List of values

[1, 2, 3, 5, 7, 11, 13, 16, 17, 19, 23, 29, 31, 36, 37, 41, 43, 47, 48, 53, 59, 61, 64, 67, 71, 73, 79, 80, 81, 83, 89, 97, 100, 101, 103, 107, 109, 112, 113, 120, 127, 131, 137, 139, 144, 149, 151, 157, 162, 163, 167, 168, 173, 176, 179, 181, 191, 193, 196, 197, 199]