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%I #8 Dec 16 2021 22:18:54
%S 1,2,5,14,61,320,3037
%N Number of different parameter sets for orthogonal arrays with 2^n runs.
%C Number of nodes in lattice Lambda_{2^n}.
%D Calculated by M. Colgan, E. M. Rains and N. J. A. Sloane, August 1999.
%H 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://neilsloane.com/doc/rao.txt">Abstract</a>, <a href="http://neilsloane.com/doc/rao.pdf">pdf</a>, <a href="http://neilsloane.com/doc/rao.ps">ps</a>)
%Y Cf. A049082.
%K nonn,nice
%O 0,2
%A _N. J. A. Sloane_
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