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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.

A378250 Perfect-powers x > 1 such that it is not possible to choose a prime y and a perfect-power z satisfying x > y > z.

Table of values

n a(n)
1 4
2 8
3 16
4 25
5 32
6 49
7 64
8 81
9 100
10 121
11 128
12 144
13 169
14 196
15 216
16 225
17 243
18 256
19 289
20 324
21 343
22 361
23 400
24 441
25 484
26 512
27 529
28 576
29 625
30 676
31 729
32 784
33 841
34 900
35 961
36 1000
37 1024
38 1089
39 1156
40 1225
41 1296
42 1331
43 1369
44 1444
45 1521
46 1600
47 1681
48 1728
49 1764
50 1849
51 1936

List of values

[4, 8, 16, 25, 32, 49, 64, 81, 100, 121, 128, 144, 169, 196, 216, 225, 243, 256, 289, 324, 343, 361, 400, 441, 484, 512, 529, 576, 625, 676, 729, 784, 841, 900, 961, 1000, 1024, 1089, 1156, 1225, 1296, 1331, 1369, 1444, 1521, 1600, 1681, 1728, 1764, 1849, 1936]

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

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