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%I #6 Mar 07 2015 05:58:21
%S 1,4,9,20,40,82,166,334,670,1340,2682,5366,10734,21470,42942,85886,
%T 171774
%N Number at start of segment n of A117073.
%D N. J. A. Sloane and Allan Wilks, On sequences of Recaman type, paper in preparation, 2006.
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Apr 17 2006
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