%I A049083
%S A049083 0,1,1,1,2,3,11,21,72,144521
%N A049083 Number of dual atoms in lattice Lambda'_{2^n} of putative parameter sets 
               for orthogonal arrays with 2^n runs.
%D A049083 Calculated by M. Colgan, E. M. Rains and N. J. A. Sloane, August 1999.
%H A049083 E. M. Rains, N. J. A. Sloane and J. Stufken, The Lattice of N-Run Orthogonal 
               Arrays, J. Stat. Planning Inference, 102 (2002), 477-500 (<a href="http:/
               /www.research.att.com/~njas/doc/rao.txt">Abstract</a>, <a href="http:/
               /www.research.att.com/~njas/doc/rao.pdf">pdf</a>, <a href="http:/
               /www.research.att.com/~njas/doc/rao.ps">ps</a>)
%Y A049083 Sequence in context: A004687 A097895 A023182 this_sequence A002778 A028816 
               A128921
%Y A049083 Adjacent sequences: A049080 A049081 A049082 this_sequence A049084 A049085 
               A049086
%K A049083 nonn,nice
%O A049083 0,5
%A A049083 N. J. A. Sloane (njas(AT)research.att.com).