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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.

A318762 Number of permutations of a multiset whose multiplicities are the prime indices of n.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 1
6 3
7 1
8 6
9 6
10 4
11 1
12 12
13 1
14 5
15 10
16 24
17 1
18 30
19 1
20 20
21 15
22 6
23 1
24 60
25 20
26 7
27 90
28 30
29 1
30 60
31 1
32 120
33 21
34 8
35 35
36 180
37 1
38 9
39 28
40 120
41 1
42 105
43 1
44 42
45 210
46 10
47 1
48 360
49 70
50 140
51 36
52 56
53 1
54 630
55 56
56 210
57 45
58 11
59 1
60 420
61 1
62 12
63 420
64 720
65 84
66 168
67 1
68 72
69 55

List of values

[1, 1, 1, 2, 1, 3, 1, 6, 6, 4, 1, 12, 1, 5, 10, 24, 1, 30, 1, 20, 15, 6, 1, 60, 20, 7, 90, 30, 1, 60, 1, 120, 21, 8, 35, 180, 1, 9, 28, 120, 1, 105, 1, 42, 210, 10, 1, 360, 70, 140, 36, 56, 1, 630, 56, 210, 45, 11, 1, 420, 1, 12, 420, 720, 84, 168, 1, 72, 55]

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

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