cp's OEIS Frontend

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.

A122379 Numbers n such that S(n)! > n^2 > P(n)!, where S(n)! is the smallest factorial divisible by n and P(n) is the greatest prime factor of n.

Table of values

n a(n)
1 4
2 9
3 16
4 18
5 25
6 27
7 32
8 50
9 54
10 64
11 75
12 81
13 96
14 98
15 100
16 108
17 125
18 128
19 135
20 147
21 150
22 160
23 162
24 175
25 189
26 192
27 196
28 200
29 216
30 225
31 243
32 245
33 250
34 256
35 270
36 294
37 300
38 324
39 343
40 350
41 375
42 378
43 392
44 400
45 405
46 432
47 441
48 450
49 486
50 490
51 500
52 512
53 525
54 540
55 567

List of values

[4, 9, 16, 18, 25, 27, 32, 50, 54, 64, 75, 81, 96, 98, 100, 108, 125, 128, 135, 147, 150, 160, 162, 175, 189, 192, 196, 200, 216, 225, 243, 245, 250, 256, 270, 294, 300, 324, 343, 350, 375, 378, 392, 400, 405, 432, 441, 450, 486, 490, 500, 512, 525, 540, 567]

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

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