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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.

A323731 a(n) is the number of numbers k whose n-th power has exactly k divisors.

Table of values

n a(n)
0 1
1 2
2 2
3 3
4 4
5 1
6 2
7 2
8 2
9 2
10 5
11 2
12 4
13 2
14 1
15 2
16 5
17 2
18 2
19 4
20 2
21 1
22 2
23 4
24 2
25 2
26 2
27 2
28 5
29 4
30 2
31 2
32 2
33 2
34 2
35 2
36 2
37 2
38 2
39 4
40 3
41 1
42 5
43 10
44 3
45 2
46 5
47 2
48 2
49 2
50 1
51 4
52 2
53 3
54 1
55 6
56 2
57 2
58 2
59 6
60 4
61 4
62 3
63 4
64 2
65 2
66 5
67 1
68 2
69 2
70 5
71 4
72 5
73 2
74 3
75 3
76 1
77 4
78 2
79 5
80 2
81 2
82 2
83 2
84 2
85 2
86 1

List of values

[1, 2, 2, 3, 4, 1, 2, 2, 2, 2, 5, 2, 4, 2, 1, 2, 5, 2, 2, 4, 2, 1, 2, 4, 2, 2, 2, 2, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 3, 1, 5, 10, 3, 2, 5, 2, 2, 2, 1, 4, 2, 3, 1, 6, 2, 2, 2, 6, 4, 4, 3, 4, 2, 2, 5, 1, 2, 2, 5, 4, 5, 2, 3, 3, 1, 4, 2, 5, 2, 2, 2, 2, 2, 2, 1]

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

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