%I A031098
%S A031098 7,6,5,4,3,2,1,0,7,8,7,7,7,6,7,5,7,4,7,3,7,2,7,1,7,0,6,8,6,7,
%T A031098 6,6,6,5,6,4,6,3,6,2,6,1,6,0,5,8,5,7,5,6,5,5,5,4,5,3,5,2,5,1,
%U A031098 5,0,4,8,4,7,4,6,4,5,4,4,4,3,4,2,4,1,4,0,3,8,3,7,3,6,3,5,3,4
%N A031098 Write n in base 9, then complement each digit (d -> 4-d) and juxtapose.
%Y A031098 Sequence in context: A072558 A022963 A023449 this_sequence A004448 A031099 
               A055118
%Y A031098 Adjacent sequences: A031095 A031096 A031097 this_sequence A031099 A031100 
               A031101
%K A031098 nonn,base
%O A031098 1,1
%A A031098 Clark Kimberling (ck6(AT)evansville.edu)