%I A118762
%S A118762 1,1,1,1,1,1,1,1,1,10,1,1,1,1,1,1,1,1,1,10,1,1,1,1,1,1,1,1,1,10,1,1,1,
               1,
%T A118762 1,1,1,1,1,10,1,1,1,1,1,1,1,1,1,10,1,1,1,1,1,1,1,1,1,10,1,1,1,1,1,1,1,
               1,
%U A118762 1,10,1,1,1,1,1,1,1,1,1,10,1,1,1,1,1,1,1,1,1,10,1,1,1,1,1,1,1,1,1,100
%V A118762 1,1,1,1,1,1,1,1,1,10,-1,-1,-1,-1,-1,-1,-1,-1,-1,10,1,1,1,1,1,1,1,1,1,
               10,-1,-1,-1,-1,
%W A118762 -1,-1,-1,-1,-1,10,1,1,1,1,1,1,1,1,1,10,-1,-1,-1,-1,-1,-1,-1,-1,-1,10,
               1,1,1,1,1,1,1,1,
%X A118762 1,10,-1,-1,-1,-1,-1,-1,-1,-1,-1,10,1,1,1,1,1,1,1,1,1,10,-1,-1,-1,-1,-1,
               -1,-1,-1,-1
%N A118762 First differences of A118757.
%C A118762 a(10^k-1) = 10^k for 0<k<=3, but a(9999)=-1, a(9998)=10000;
%C A118762 abs(a(n)) = 10^k not for all n: e.g. a(1155) = A118757(1156) - A118757(1155) 
               = 1123 - 1121 = 2.
%Y A118762 Cf. A118768.
%Y A118762 Sequence in context: A068159 A108695 A105031 this_sequence A010178 A070596 
               A010177
%Y A118762 Adjacent sequences: A118759 A118760 A118761 this_sequence A118763 A118764 
               A118765
%K A118762 sign
%O A118762 1,10
%A A118762 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 01 2006