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.

A088010 Odd numbers n such that abs(sigma(n)-2n) <= n^(1/3). Abundance-radius = abs(sigma(n)-2n) does not exceed cubic root of n and n is odd.

Table of values

n a(n)
1 1
2 315
3 1155
4 8415
5 8925
6 31815
7 32445
8 33705
9 34335
10 78975
11 351351
12 430815
13 437745
14 442365
15 449295
16 730125
17 1805475
18 7667625
19 13800465
20 14571585
21 16029405
22 16286445
23 20297745
24 20355825
25 20487159
26 21003885
27 22982505
28 23082885

List of values

[1, 315, 1155, 8415, 8925, 31815, 32445, 33705, 34335, 78975, 351351, 430815, 437745, 442365, 449295, 730125, 1805475, 7667625, 13800465, 14571585, 16029405, 16286445, 20297745, 20355825, 20487159, 21003885, 22982505, 23082885]

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

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