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.

A331230 Numbers k such that the number of factorizations of k into distinct factors > 1 is odd.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 7
7 9
8 11
9 12
10 13
11 17
12 18
13 19
14 20
15 23
16 24
17 25
18 28
19 29
20 30
21 31
22 32
23 36
24 37
25 40
26 41
27 42
28 43
29 44
30 45
31 47
32 48
33 49
34 50
35 52
36 53
37 54
38 56
39 59
40 60
41 61
42 63
43 66
44 67
45 68
46 70
47 71
48 72
49 73
50 75
51 76
52 78
53 79
54 80
55 83
56 84
57 88
58 89
59 90
60 92
61 97
62 98
63 99
64 100
65 101
66 102

List of values

[1, 2, 3, 4, 5, 7, 9, 11, 12, 13, 17, 18, 19, 20, 23, 24, 25, 28, 29, 30, 31, 32, 36, 37, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 52, 53, 54, 56, 59, 60, 61, 63, 66, 67, 68, 70, 71, 72, 73, 75, 76, 78, 79, 80, 83, 84, 88, 89, 90, 92, 97, 98, 99, 100, 101, 102]

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

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