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%I #11 Mar 30 2012 19:00:32
%S 0,1,2,5,6,23,16,89,106,267,364,1741,526,5135,9360,17681,16914,99347,
%T 71188,404501,372758,892951,1763352,7720985,2809882,17154075,34201628,
%U 82821149,83623966,435683359,189300768,1452343329,1695678498,4418961443,8835694628
%N Sum_{k>0} (n mod k) * 2^(n-k).
%p a:= n-> add ((n mod k) * 2^(n-k), k=1..n-1) + n:
%p seq (a(n), n=0..40);
%t Table[Sum[Mod[n, k] 2^(n-k), {k, 1, Infinity}], {n, 0, 100}]
%K nonn
%O 0,3
%A _Vladimir Reshetnikov_, Dec 29 2010
%E Edited by _Alois P. Heinz_, Dec 29 2010
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