%I A083656
%S A083656 1,3,8,15,24,35,47,62,78,97,118,140,165,191,220,251,284,319,355,394,435,
%T A083656 478,523,569,618,668,721,776,833,892,952,1015,1080,1147,1216,1286,1359,
%U A083656 1433,1510,1589,1669,1752,1836,1923,2012,2103,2196,2290,2387,2485,2586
%N A083656 a(n)=sum(i=1,n,floor(r*floor(r*i))) where r=sqrt(2).
%C A083656 Partial sums of A007069
%F A083656 a(n) = n*(n-1+1/sqrt(2)) + O(1)
%Y A083656 Sequence in context: A064356 A157606 A086959 this_sequence A013648 A005563 
               A132411
%Y A083656 Adjacent sequences: A083653 A083654 A083655 this_sequence A083657 A083658 
               A083659
%K A083656 nonn
%O A083656 1,2
%A A083656 Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 13 2003