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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.

A265393 a(n) = the smallest number k such that floor(Sum_{d|k} 1/tau(d)) = n.

Table of values

n a(n)
1 1
2 6
3 24
4 60
5 180
6 420
7 840
8 2520
9 4620
10 9240
11 13860
12 27720
13 60060
14 55440
15 110880
16 166320
17 180180
18 480480
19 360360
20 900900
21 720720
22 1441440
23 1801800
24 2162160
25 3063060
26 4084080
27 7207200
28 12612600
29 6126120
30 27027000
31 12252240
32 18378360
33 43243200
34 24504480

List of values

[1, 6, 24, 60, 180, 420, 840, 2520, 4620, 9240, 13860, 27720, 60060, 55440, 110880, 166320, 180180, 480480, 360360, 900900, 720720, 1441440, 1801800, 2162160, 3063060, 4084080, 7207200, 12612600, 6126120, 27027000, 12252240, 18378360, 43243200, 24504480]

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

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