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.

A379370 Denominators of the partial alternating sums of the reciprocals of the squarefree kernel function (A007947).

Table of values

n a(n)
1 1
2 2
3 6
4 3
5 15
6 30
7 210
8 105
9 35
10 70
11 770
12 1155
13 15015
14 30030
15 2002
16 1001
17 17017
18 102102
19 1939938
20 4849845
21 4849845
22 9699690
23 223092870
24 37182145
25 37182145
26 74364290
27 223092870
28 111546435
29 3234846615
30 2156564410
31 66853496710
32 33426748355
33 100280245065
34 200560490130

List of values

[1, 2, 6, 3, 15, 30, 210, 105, 35, 70, 770, 1155, 15015, 30030, 2002, 1001, 17017, 102102, 1939938, 4849845, 4849845, 9699690, 223092870, 37182145, 37182145, 74364290, 223092870, 111546435, 3234846615, 2156564410, 66853496710, 33426748355, 100280245065, 200560490130]

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

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