%I A068341
%S A068341 1,2,1,2,1,4,2,0,3,0,1,2,1,2,6,8,0,2,3,0,5,4,2,2,1,2,1,6,5,2,4,4,5,0,
%T A068341 10,6,7,2,2,4,3,2,1,4,1,4,10,4,4,14,1,4,8,2,2,12,3,2,13,10,11,10,2,6,
%U A068341 13,6,5,8,5,2,18,10,5,6,9,0
%V A068341 1,-2,-1,2,-1,4,-2,0,3,0,-1,-2,1,2,6,-8,0,-2,3,0,5,-4,2,-2,1,-2,1,-6,5,
               -2,4,-4,5,0,10,
%W A068341 -6,-7,-2,2,-4,3,-2,1,-4,-1,4,10,4,4,-14,-1,-4,8,2,2,-12,-3,2,13,10,-11,
               -10,-2,-6,13,
%X A068341 -6,-5,-8,5,2,18,10,-5,-6,-9,0
%N A068341 Sum{k=1 to n} mu(k) mu(n+1-k), where mu(k) is the Moebius function.
%H A068341 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%Y A068341 Sequence in context: A055684 A024559 A061797 this_sequence A100380 A080825 
               A034693
%Y A068341 Adjacent sequences: A068338 A068339 A068340 this_sequence A068342 A068343 
               A068344
%K A068341 sign
%O A068341 1,2
%A A068341 Leroy Quet, Feb 27 2002