%I A123866
%S A123866 0,63,728,4095,15624,46655,117648,262143,531440,999999,1771560,2985983,
%T A123866 4826808,7529535,11390624,16777215,24137568,34012223,47045880,63999999,
%U A123866 85766120,113379903,148035888,191102975,244140624,308915775,387420488
%N A123866 n^6 - 1.
%C A123866 a(n) mod 7 = 0 iff n mod 7 > 0: a(A008589(n))=6; a(A047304(n)) = 0; a(n) 
               mod 7 = 6*(1-A082784(n)).
%C A123866 a(n) = A005563(n-1)*A059826(n) = A068601(n)*A001093(n). - Reinhard Zumkeller, 
               Feb 02 2007
%o A123866 (Other) sage: [lucas_number1(3,n^3,1) for n in xrange(1, 28)]# [From 
               Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Nov 23 2009]
%Y A123866 Cf. A024004, A001014, A005563, A123865, A123867, A123868.
%Y A123866 Sequence in context: A086578 A115152 A069091 this_sequence A024004 A091027 
               A112494
%Y A123866 Adjacent sequences: A123863 A123864 A123865 this_sequence A123867 A123868 
               A123869
%K A123866 nonn,new
%O A123866 1,2
%A A123866 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 16 2006