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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.

A327656 Maximum divisor of n that is 1 or whose prime indices have a common divisor > 1.

Table of values

n a(n)
1 1
2 1
3 3
4 1
5 5
6 3
7 7
8 1
9 9
10 5
11 11
12 3
13 13
14 7
15 5
16 1
17 17
18 9
19 19
20 5
21 21
22 11
23 23
24 3
25 25
26 13
27 27
28 7
29 29
30 5
31 31
32 1
33 11
34 17
35 7
36 9
37 37
38 19
39 39
40 5
41 41
42 21
43 43
44 11
45 9
46 23
47 47
48 3
49 49
50 25
51 17
52 13
53 53
54 27
55 11
56 7
57 57
58 29
59 59
60 5
61 61
62 31
63 63
64 1
65 65
66 11
67 67
68 17
69 23
70 7
71 71
72 9
73 73

List of values

[1, 1, 3, 1, 5, 3, 7, 1, 9, 5, 11, 3, 13, 7, 5, 1, 17, 9, 19, 5, 21, 11, 23, 3, 25, 13, 27, 7, 29, 5, 31, 1, 11, 17, 7, 9, 37, 19, 39, 5, 41, 21, 43, 11, 9, 23, 47, 3, 49, 25, 17, 13, 53, 27, 11, 7, 57, 29, 59, 5, 61, 31, 63, 1, 65, 11, 67, 17, 23, 7, 71, 9, 73]

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

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