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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.

A200612 The arithmetic mean of the prime factors (with multiplicity) of n is 3.

Table of values

n a(n)
1 3
2 9
3 20
4 27
5 60
6 81
7 112
8 180
9 243
10 336
11 400
12 540
13 729
14 1008
15 1200
16 1620
17 2187
18 2240
19 2816
20 3024
21 3600
22 4860
23 6561
24 6720
25 8000
26 8448
27 9072
28 10800
29 12544
30 13312
31 14580
32 19683
33 20160
34 24000
35 25344
36 27216
37 32400
38 37632
39 39936
40 43740
41 44800
42 56320
43 59049
44 60480

List of values

[3, 9, 20, 27, 60, 81, 112, 180, 243, 336, 400, 540, 729, 1008, 1200, 1620, 2187, 2240, 2816, 3024, 3600, 4860, 6561, 6720, 8000, 8448, 9072, 10800, 12544, 13312, 14580, 19683, 20160, 24000, 25344, 27216, 32400, 37632, 39936, 43740, 44800, 56320, 59049, 60480]

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

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