%I A122250
%S A122250 0,1,3,7,12,18,26,35,45,58,72,87,104,122,141,162,184,207,233,260,288,
%T A122250 318,349,381,415,450,486,526,567,609,653,698,744,792,841,891,944,998,
%U A122250 1053,1110,1168
%N A122250 Partial sums of A004128.
%F A122250 G.f.: (1/(1-x))*Sum{k=0..infinity, x^(3^k)/((1-x)*(1-x^(3^k)))}; a(n)=sum{k=1..n, 
               sum{j=0..n, floor(k/3^j)}};
%Y A122250 Sequence in context: A024517 A005228 A000969 this_sequence A024388 A109638 
               A008332
%Y A122250 Adjacent sequences: A122247 A122248 A122249 this_sequence A122251 A122252 
               A122253
%K A122250 easy,nonn
%O A122250 0,3
%A A122250 Paul Barry (pbarry(AT)wit.ie), Aug 27 2006