%I A013941
%S A013941 0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,4,
%T A013941 4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,8,
%U A013941 8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11
%N A013941 a(n) = Sum_{k=1..n} floor(n/ithprime(k)^3).
%Y A013941 Sequence in context: A111898 A072746 A105390 this_sequence A061798 A029241 
               A103376
%Y A013941 Adjacent sequences: A013938 A013939 A013940 this_sequence A013942 A013943 
               A013944
%K A013941 nonn
%O A013941 1,16
%A A013941 N. J. A. Sloane (njas(AT)research.att.com), Henri Lifchitz (100637.64(AT)CompuServe.COM)