%I A031876
%S A031876 0,1,2,3,4,5,6,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,
%T A031876 45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,99,102,105,108,
%U A031876 111,114,117,120,123,126,129,132,135,138,141,144,147,150,153,156,160
%N A031876 Sum(floor(k^(1/3)),k=0..n).
%F A031876 a(0)=0, a(1)=1, a(n)=2 a(n-1) - a(n-2) if n not a perfect cube, a(n)=2 
               a(n-1) - a(n-2) + 1 if n is a perfect cube.
%Y A031876 Sequence in context: A032957 A057202 A033059 this_sequence A008725 A011867 
               A026445
%Y A031876 Adjacent sequences: A031873 A031874 A031875 this_sequence A031877 A031878 
               A031879
%K A031876 nonn
%O A031876 0,3
%A A031876 TIXIER Michel (tixier(AT)dyadel.net)