%I A000801 M1015 N0381
%S A000801 2,4,6,10,16,26,44,76,132,234,420,761,1391,2561,4745,8841,
%T A000801 16551,31114,58708,111136,211000,401650,766372,1465422,
%U A000801 2807599,5388709,10359735,19946715,38459505,74250899,143524565
%N A000801 Sum [ 2^k / k ], k = 1 . . n.
%D A000801 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000801 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%p A000801 A000801 := proc(n) local k; sum(floor(2^k/k),k=1..n); end;
%Y A000801 Cf. A000799.
%Y A000801 Sequence in context: A128588 A023613 A065795 this_sequence A080105 A023557 
               A052185
%Y A000801 Adjacent sequences: A000798 A000799 A000800 this_sequence A000802 A000803 
               A000804
%K A000801 nonn
%O A000801 1,1
%A A000801 N. J. A. Sloane (njas(AT)research.att.com).