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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.

A173617 Numbers k such that phi(tau(k)) = rad(k).

Table of values

n a(n)
1 1
2 4
3 8
4 32
5 36
6 192
7 288
8 768
9 972
10 1458
11 5120
12 13122
13 326592
14 19531250
15 22588608
16 46137344
17 171532242
18 110000000000
19 132799613957120
20 1618481116086272
21 506590324238281250
22 8358680908399640576
23 162805498773679522226642
24 198263834416799184651812864
25 7852841179377049820122874642432
26 4299870835974154129876817272635392

List of values

[1, 4, 8, 32, 36, 192, 288, 768, 972, 1458, 5120, 13122, 326592, 19531250, 22588608, 46137344, 171532242, 110000000000, 132799613957120, 1618481116086272, 506590324238281250, 8358680908399640576, 162805498773679522226642, 198263834416799184651812864, 7852841179377049820122874642432, 4299870835974154129876817272635392]

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

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