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%I #3 Mar 30 2012 18:50:45
%S 1,3,5,7,13,15,18,20,29,31,41,43,59,61,65,67,89,91,115,117,133,135,
%T 153,155,173,175,207,209,243,245,250,252,305,307,338,340,389,391,407,
%U 409,447,449,527,529,554,556,613,615,663,665,699,701,761,763,788,790,869
%N Smallest m such that A097686(m)=n.
%C a(2*n) = a(2*n-1) + 2.
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Aug 19 2004
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