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.

A056675 Number of non-unitary but squarefree divisors of n!. Also number of unitary but not-squarefree divisors of n!.

Table of values

n a(n)
1 0
2 0
3 0
4 2
5 4
6 6
7 12
8 12
9 12
10 14
11 28
12 28
13 56
14 60
15 60
16 60
17 120
18 120
19 240
20 240
21 240
22 248
23 496
24 496
25 496
26 504
27 504
28 504
29 1008
30 1008
31 2016
32 2016
33 2016
34 2032
35 2032
36 2032
37 4064
38 4080
39 4080
40 4080
41 8160
42 8160
43 16320
44 16320
45 16320
46 16352
47 32704
48 32704
49 32704
50 32704

List of values

[0, 0, 0, 2, 4, 6, 12, 12, 12, 14, 28, 28, 56, 60, 60, 60, 120, 120, 240, 240, 240, 248, 496, 496, 496, 504, 504, 504, 1008, 1008, 2016, 2016, 2016, 2032, 2032, 2032, 4064, 4080, 4080, 4080, 8160, 8160, 16320, 16320, 16320, 16352, 32704, 32704, 32704, 32704]

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

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