%I A038871
%S A038871 0,1,1,3,1,5,7,1,5,11,15,1,9,21,27,31,1,9,21,43,55,63,1,17,37,85,91,
%T A038871 119,127,1,17,73,85,171,219,239,255,1,33,73,165,341,363,439,495,511,
%U A038871 1,33,137,293,341,683,731,887,991,1023,1,65,273,585,661,1365,1387
%N A038871 Triangle read by rows: T(n,k) = number of orbits of order k under doubling 
               map which remain in a semicircle, with k dividing n.
%Y A038871 Cf. A038870.
%Y A038871 Sequence in context: A140950 A016600 A130418 this_sequence A143524 A134249 
               A001607
%Y A038871 Adjacent sequences: A038868 A038869 A038870 this_sequence A038872 A038873 
               A038874
%K A038871 nonn,tabf,easy
%O A038871 1,4
%A A038871 Francois Maurel (maurel(AT)sequoia.ens.fr)