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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.

A048102 Numbers k such that if k = Product p_i^e_i then p_i = e_i for all i.

Table of values

n a(n)
1 1
2 4
3 27
4 108
5 3125
6 12500
7 84375
8 337500
9 823543
10 3294172
11 22235661
12 88942644
13 2573571875
14 10294287500
15 69486440625
16 277945762500
17 285311670611
18 1141246682444
19 7703415106497
20 30813660425988
21 302875106592253
22 891598970659375
23 1211500426369012
24 3566395882637500

List of values

[1, 4, 27, 108, 3125, 12500, 84375, 337500, 823543, 3294172, 22235661, 88942644, 2573571875, 10294287500, 69486440625, 277945762500, 285311670611, 1141246682444, 7703415106497, 30813660425988, 302875106592253, 891598970659375, 1211500426369012, 3566395882637500]

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

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