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%I #4 Feb 27 2023 08:05:07
%S 0,1,2,4,5,7,9,10,12,13,15,16,18,20,21,24,25,27,29,30,32,33,35,36,38,
%T 40,41,43,44,47,49,50,52,53,56,58,59,61,62,64,65,67,69,71,73,74,76,78,
%U 79,81,82,84,85,87,89,90,92,94,96,98,99,101,102,104,105,107,109,110,113
%N Sum{Floor(n*(r^k)): r=sqrt(2)-1, k>=0}.
%e a(3)=4=3+[3*r]+[3*r^2]+[3*r^3]+...
%Y Cf. A005187.
%K nonn
%O 0,3
%A _Clark Kimberling_, Aug 07 2003
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