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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.

A212646 a(n) = number of Abelian groups of order A181800(n) (n-th powerful number that is the first integer of its prime signature).

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 7
6 4
7 11
8 6
9 15
10 10
11 9
12 22
13 14
14 15
15 30
16 22
17 21
18 8
19 42
20 30
21 25
22 33
23 12
24 56
25 44
26 35
27 45
28 20
29 77
30 60
31 55
32 18
33 66
34 28
35 49
36 101
37 84
38 75
39 30
40 90
41 44
42 77
43 135
44 112
45 110
46 42
47 27
48 126
49 60
50 105
51 50
52 176
53 154
54 150
55 66
56 16
57 121
58 45
59 168
60 88
61 154
62 70
63 231
64 202

List of values

[1, 2, 3, 5, 7, 4, 11, 6, 15, 10, 9, 22, 14, 15, 30, 22, 21, 8, 42, 30, 25, 33, 12, 56, 44, 35, 45, 20, 77, 60, 55, 18, 66, 28, 49, 101, 84, 75, 30, 90, 44, 77, 135, 112, 110, 42, 27, 126, 60, 105, 50, 176, 154, 150, 66, 16, 121, 45, 168, 88, 154, 70, 231, 202]

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

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