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.
%I A177106 #7 Jul 14 2019 13:42:32 %S A177106 6,7,8,9,12,13,14,18,22,23,24,25,26,29,31,32,33,35,37,38,39,40,41,42, %T A177106 43,45,46,47,49,51,52,53,54,55,57,58,59,60,61,62,63,64,65,66,67,68,69, %U A177106 70,71,73,74,76,77,78,79,80,81,83,85,86,87,88,89,90,91,92,93,94,95,96,98 %N A177106 Numbers n for which n^5-n-1 is not prime. %C A177106 Includes all numbers == 6 or 8 (mod 17). - _Robert Israel_, Jul 14 2019 %H A177106 Robert Israel, <a href="/A177106/b177106.txt">Table of n, a(n) for n = 1..10000</a> %p A177106 remove(t -> isprime(t^5-t-1), [$2..200]); # _Robert Israel_, Jul 14 2019 %t A177106 Select[Range[100],CompositeQ[#^5-#-1]&] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, May 18 2019 *) %Y A177106 Cf. A126427 (Numbers n for which n^5-n-1 is prime). %K A177106 nonn %O A177106 1,1 %A A177106 _Vincenzo Librandi_, Jun 25 2010