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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.

A322020 a(n) = Product_{d|n, gcd(d,n/d) is a prime power} gcd(d,n/d).

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 1
6 1
7 1
8 4
9 3
10 1
11 1
12 4
13 1
14 1
15 1
16 16
17 1
18 9
19 1
20 4
21 1
22 1
23 1
24 16
25 5
26 1
27 9
28 4
29 1
30 1
31 1
32 64
33 1
34 1
35 1
36 36
37 1
38 1
39 1
40 16
41 1
42 1
43 1
44 4
45 9
46 1
47 1
48 256
49 7
50 25
51 1
52 4
53 1
54 81
55 1
56 16
57 1
58 1
59 1
60 16
61 1
62 1
63 9
64 512
65 1
66 1
67 1
68 4
69 1
70 1
71 1
72 144
73 1
74 1
75 25
76 4
77 1
78 1
79 1
80 256
81 81
82 1
83 1
84 16
85 1
86 1
87 1
88 16
89 1
90 81
91 1
92 4
93 1
94 1
95 1
96 4096
97 1
98 49
99 9
100 100
101 1
102 1
103 1
104 16
105 1

List of values

[1, 1, 1, 2, 1, 1, 1, 4, 3, 1, 1, 4, 1, 1, 1, 16, 1, 9, 1, 4, 1, 1, 1, 16, 5, 1, 9, 4, 1, 1, 1, 64, 1, 1, 1, 36, 1, 1, 1, 16, 1, 1, 1, 4, 9, 1, 1, 256, 7, 25, 1, 4, 1, 81, 1, 16, 1, 1, 1, 16, 1, 1, 9, 512, 1, 1, 1, 4, 1, 1, 1, 144, 1, 1, 25, 4, 1, 1, 1, 256, 81, 1, 1, 16, 1, 1, 1, 16, 1, 81, 1, 4, 1, 1, 1, 4096, 1, 49, 9, 100, 1, 1, 1, 16, 1]