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.

A220096 a(1)=0, n-1 if n is prime, else largest proper divisor of n.

Table of values

n a(n)
1 0
2 1
3 2
4 2
5 4
6 3
7 6
8 4
9 3
10 5
11 10
12 6
13 12
14 7
15 5
16 8
17 16
18 9
19 18
20 10
21 7
22 11
23 22
24 12
25 5
26 13
27 9
28 14
29 28
30 15
31 30
32 16
33 11
34 17
35 7
36 18
37 36
38 19
39 13
40 20
41 40
42 21
43 42
44 22
45 15
46 23
47 46
48 24
49 7
50 25
51 17
52 26
53 52
54 27
55 11
56 28
57 19
58 29
59 58
60 30
61 60
62 31
63 21
64 32
65 13
66 33
67 66
68 34
69 23
70 35
71 70

List of values

[0, 1, 2, 2, 4, 3, 6, 4, 3, 5, 10, 6, 12, 7, 5, 8, 16, 9, 18, 10, 7, 11, 22, 12, 5, 13, 9, 14, 28, 15, 30, 16, 11, 17, 7, 18, 36, 19, 13, 20, 40, 21, 42, 22, 15, 23, 46, 24, 7, 25, 17, 26, 52, 27, 11, 28, 19, 29, 58, 30, 60, 31, 21, 32, 13, 33, 66, 34, 23, 35, 70]

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

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