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.

A335030 Numbers m that are not practical and have an abundancy index sigma(m)/m which is larger than that of any smaller number that is not practical.

Table of values

n a(n)
1 3
2 9
3 10
4 44
5 70
6 102
7 350
8 372
9 1608
10 3492
11 6096
12 10380
13 44040
14 100260
15 180240
16 425160
17 1744560
18 2425080
19 5509980
20 10048080
21 23614920
22 97639920
23 396315360
24 900229680
25 2519017200
26 3113704440
27 12870562320
28 52307529120

List of values

[3, 9, 10, 44, 70, 102, 350, 372, 1608, 3492, 6096, 10380, 44040, 100260, 180240, 425160, 1744560, 2425080, 5509980, 10048080, 23614920, 97639920, 396315360, 900229680, 2519017200, 3113704440, 12870562320, 52307529120]

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

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