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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.

A235425 Numbers k such that between k and the next prime there are gpf(k) numbers, where gpf(k) denotes the largest prime factor of k.

Table of values

n a(n)
1 8
2 64
3 128
4 625
5 729
6 1701
7 2625
8 3025
9 4096
10 6435
11 8505
12 10115
13 12675
14 14641
15 17303
16 19343
17 19683
18 19845
19 21125
20 25515
21 25725
22 26325
23 26741
24 27783
25 32768
26 33075
27 33275
28 34075
29 35721
30 38025
31 39375
32 42525
33 43875
34 50193
35 59319
36 60835
37 61731
38 70805
39 75411
40 75803

List of values

[8, 64, 128, 625, 729, 1701, 2625, 3025, 4096, 6435, 8505, 10115, 12675, 14641, 17303, 19343, 19683, 19845, 21125, 25515, 25725, 26325, 26741, 27783, 32768, 33075, 33275, 34075, 35721, 38025, 39375, 42525, 43875, 50193, 59319, 60835, 61731, 70805, 75411, 75803]

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

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