cp's OEIS Frontend

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.

A379716 The second Jordan totient function applied to the powerful numbers: a(n) = A007434(A001694(n)).

Table of values

n a(n)
1 1
2 12
3 48
4 72
5 192
6 600
7 648
8 768
9 864
10 2352
11 3072
12 3456
13 5832
14 7200
15 7776
16 14520
17 15000
18 12288
19 13824
20 28392
21 28224
22 28800
23 31104
24 43200
25 52488
26 49152
27 55296
28 83232
29 69984
30 115248
31 129960
32 112896
33 115200
34 124416
35 169344
36 174240
37 180000
38 196608
39 279312
40 221184
41 375000

List of values

[1, 12, 48, 72, 192, 600, 648, 768, 864, 2352, 3072, 3456, 5832, 7200, 7776, 14520, 15000, 12288, 13824, 28392, 28224, 28800, 31104, 43200, 52488, 49152, 55296, 83232, 69984, 115248, 129960, 112896, 115200, 124416, 169344, 174240, 180000, 196608, 279312, 221184, 375000]

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

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