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 A057233 Numbers n such that n | 8^n + 7^n + 6^n. 2

%I

%S 1,3,7,9,21,27,49,51,63,81,147,189,243,343,441,567,729,931,1029,1323,

%T 1593,1701,2187,2349,2401,2493,2499,3087,3969,4077,4131,5103,6561,

%U 7203,9261,11907,15309,16807,19683,21609,27783,31743,35721,45927,50421

%N Numbers n such that n | 8^n + 7^n + 6^n.

%H Robert Israel, <a href="/A057233/b057233.txt">Table of n, a(n) for n = 1..238</a>

%p select(n -> 6 &^ n + 7 &^ n + 8 &^ n) mod n = 0, [\$1..10^5]); # _Robert Israel_, Jan 30 2020

%t Select[ Range[ 10^6 ], Mod[ PowerMod[ 8, #, # ] + PowerMod[ 7, #, # ] + PowerMod[ 6, #, # ], # ] == 0 & ]

%Y Contains A003594.

%K nonn

%O 1,2

%A _Robert G. Wilson v_, Sep 20 2000

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Last modified September 27 03:21 EDT 2020. Contains 337380 sequences. (Running on oeis4.)