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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.

A379580 Denominators of the partial sums of the reciprocals of the powerfree part function (A055231).

Table of values

n a(n)
1 1
2 2
3 6
4 6
5 30
6 5
7 35
8 35
9 35
10 70
11 770
12 2310
13 30030
14 15015
15 5005
16 5005
17 85085
18 170170
19 3233230
20 3233230
21 9699690
22 4849845
23 111546435
24 111546435
25 111546435
26 223092870
27 223092870
28 223092870
29 6469693230
30 1078282205
31 33426748355
32 33426748355
33 9116385915
34 18232771830

List of values

[1, 2, 6, 6, 30, 5, 35, 35, 35, 70, 770, 2310, 30030, 15015, 5005, 5005, 85085, 170170, 3233230, 3233230, 9699690, 4849845, 111546435, 111546435, 111546435, 223092870, 223092870, 223092870, 6469693230, 1078282205, 33426748355, 33426748355, 9116385915, 18232771830]

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

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