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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.

A367642 a(n) is the smallest natural number such that the number of perfect powers less than n equals the number of perfect powers between n and a(n) (exclusive).

Table of values

n a(n)
1 2
2 5
3 5
4 9
5 10
6 10
7 10
8 17
9 28
10 33
11 33
12 33
13 33
14 33
15 33
16 37
17 50
18 50
19 50
20 50
21 50
22 50
23 50
24 50
25 65
26 82
27 101
28 122
29 122
30 122
31 122
32 126
33 129
34 129
35 129
36 145
37 170
38 170
39 170
40 170
41 170
42 170
43 170
44 170
45 170
46 170
47 170
48 170
49 197
50 217
51 217
52 217
53 217
54 217
55 217
56 217
57 217
58 217

List of values

[2, 5, 5, 9, 10, 10, 10, 17, 28, 33, 33, 33, 33, 33, 33, 37, 50, 50, 50, 50, 50, 50, 50, 50, 65, 82, 101, 122, 122, 122, 122, 126, 129, 129, 129, 145, 170, 170, 170, 170, 170, 170, 170, 170, 170, 170, 170, 170, 197, 217, 217, 217, 217, 217, 217, 217, 217, 217]

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

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