%I A068030
%S A068030 1,1,1,1,2,4,8,15,30,60,116,230,458,912,1824,3648,7286,14572,29144,
%T A068030 58264,116524,233044,466048,932096,1864192,3728300,7456600,14913200,
%U A068030 29826224,59652440,119304872,238609408,477218816,954437632,1908874584
%N A068030 Number of subsets of {1,2,3,...,n} that sum to 0 mod 9.
%Y A068030 9th row of A068009.
%Y A068030 Sequence in context: A018088 A018089 A124312 this_sequence A052325 A092603 
               A086125
%Y A068030 Adjacent sequences: A068027 A068028 A068029 this_sequence A068031 A068032 
               A068033
%K A068030 nonn
%O A068030 0,5
%A A068030 Antti Karttunen, Feb 11 2002