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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.

A379516 Denominators of the partial alternating sums of the reciprocals of the sum of unitary divisors function (A034448).

Table of values

n a(n)
1 1
2 3
3 12
4 60
5 60
6 5
7 40
8 360
9 360
10 120
11 120
12 120
13 840
14 140
15 840
16 14280
17 42840
18 42840
19 42840
20 8568
21 34272
22 34272
23 34272
24 11424
25 148512
26 49504
27 7072
28 35360
29 106080
30 318240
31 159120
32 1750320
33 109395
34 656370
35 5250960
36 26254800
37 498841200
38 498841200
39 3491888400
40 3491888400

List of values

[1, 3, 12, 60, 60, 5, 40, 360, 360, 120, 120, 120, 840, 140, 840, 14280, 42840, 42840, 42840, 8568, 34272, 34272, 34272, 11424, 148512, 49504, 7072, 35360, 106080, 318240, 159120, 1750320, 109395, 656370, 5250960, 26254800, 498841200, 498841200, 3491888400, 3491888400]

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

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