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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.

A351047 a(n) = Sum_{k=1..n} n^rad(k).

Table of values

n a(n)
1 1
2 6
3 39
4 100
5 3305
6 54726
7 958447
8 2392776
9 5375169
10 10011102310
11 311270518031
12 804967791420
13 304805198256481
14 11910060539653290
15 469042238075266815
16 1229501390272865296
17 830281003630789139585
18 2193053904527215207698
19 1983916064827419873906079

List of values

[1, 6, 39, 100, 3305, 54726, 958447, 2392776, 5375169, 10011102310, 311270518031, 804967791420, 304805198256481, 11910060539653290, 469042238075266815, 1229501390272865296, 830281003630789139585, 2193053904527215207698, 1983916064827419873906079]

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

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