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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.

A386426 Odd nondeficient numbers k such that sigma(k) has the same powerful part as k, where sigma is the sum of divisors function.

Table of values

n a(n)
1 81022725
2 891360225
3 992106225
4 1863765225
5 2349967725
6 3322372725
7 7211992725
8 8670600225
9 9156802725
10 11101612725
11 13208490225
12 15477435225
13 15963637725
14 18394650225
15 18880852725
16 21311865225
17 21960135225
18 22446337725
19 22932540225
20 25687687725
21 25849755225
22 28280767725
23 28604902725
24 30711780225
25 31035915225

List of values

[81022725, 891360225, 992106225, 1863765225, 2349967725, 3322372725, 7211992725, 8670600225, 9156802725, 11101612725, 13208490225, 15477435225, 15963637725, 18394650225, 18880852725, 21311865225, 21960135225, 22446337725, 22932540225, 25687687725, 25849755225, 28280767725, 28604902725, 30711780225, 31035915225]

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

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