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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.

A066020 a(n) is the smallest k such that (k^5 + 1)/(n^5 + 1) is an integer > 1.

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%I A066020 #8 Jun 16 2018 19:00:39
%S A066020 3,8,27,64,125,118,343,512,729,1000,1331,1728,2197,2744,3375,4096,
%T A066020 4913,5832,6859,8000,9261,10648,12167,13824,15625,11663,19683,21952,
%U A066020 11189,27000,29791,32768,35937,39304,42875,46656,50653,54872,59319,64000
%N A066020 a(n) is the smallest k such that (k^5 + 1)/(n^5 + 1) is an integer > 1.
%H A066020 Harry J. Smith, <a href="/A066020/b066020.txt">Table of n, a(n) for n = 1..200</a>
%t A066020 Do[k = 1; While[m = (k^5 + 1)/(n^5 + 1); m < 2 || !IntegerQ[m], k++ ]; Print[k], {n, 1, 40} ]
%o A066020 (PARI) { for (n=1, 200, f=n^5 + 1; a=n + 1; while (frac((a^5 + 1)/f) !=0, a++); write("b066020.txt", n, " ", a) ) } \\ _Harry J. Smith_, Nov 06 2009
%Y A066020 Cf. A065964.
%K A066020 easy,nonn
%O A066020 1,1
%A A066020 _Robert G. Wilson v_, Dec 11 2001