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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.

A173615 Numbers k such that rad(k)^2 divides sigma(k).

Table of values

n a(n)
1 1
2 96
3 864
4 1080
5 1782
6 6144
7 7128
8 7776
9 17280
10 27000
11 28512
12 54432
13 55296
14 69984
15 87480
16 114048
17 215622
18 276480
19 381024
20 393216
21 432000
22 433026
23 456192
24 497664
25 629856
26 675000
27 862488
28 1382400
29 1399680
30 1677312
31 1732104
32 1824768
33 2187000
34 2195424
35 2667168

List of values

[1, 96, 864, 1080, 1782, 6144, 7128, 7776, 17280, 27000, 28512, 54432, 55296, 69984, 87480, 114048, 215622, 276480, 381024, 393216, 432000, 433026, 456192, 497664, 629856, 675000, 862488, 1382400, 1399680, 1677312, 1732104, 1824768, 2187000, 2195424, 2667168]

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

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