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.

A329717 a(n) is n (plus or minus) the number of distinct primes dividing n according to parity (even or odd).

Table of values

n a(n)
1 1
2 1
3 2
4 3
5 4
6 8
7 6
8 7
9 8
10 12
11 10
12 14
13 12
14 16
15 17
16 15
17 16
18 20
19 18
20 22
21 23
22 24
23 22
24 26
25 24
26 28
27 26
28 30
29 28
30 27
31 30
32 31
33 35
34 36
35 37
36 38
37 36
38 40
39 41
40 42
41 40
42 39
43 42
44 46
45 47
46 48
47 46
48 50
49 48
50 52
51 53
52 54
53 52
54 56
55 57
56 58
57 59
58 60
59 58
60 57
61 60
62 64
63 65
64 63
65 67
66 63
67 66

List of values

[1, 1, 2, 3, 4, 8, 6, 7, 8, 12, 10, 14, 12, 16, 17, 15, 16, 20, 18, 22, 23, 24, 22, 26, 24, 28, 26, 30, 28, 27, 30, 31, 35, 36, 37, 38, 36, 40, 41, 42, 40, 39, 42, 46, 47, 48, 46, 50, 48, 52, 53, 54, 52, 56, 57, 58, 59, 60, 58, 57, 60, 64, 65, 63, 67, 63, 66]

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

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