%I A033500
%S A033500 1,2,4,7,12,18,27,41,57,79,110,144,192,256,325,416,538,
%T A033500 666,828,1038,1257,1540,1892,2258,2715,3294,3889,4612,5497,
%U A033500 6404,7521,8857,10224,11874,13876,15912,18314,21173,24080
%N A033500 See program line.
%p A033500 A033500 := proc(n) option remember; if n <= 2 then n else A033500(n-1)+A033500(round(2*(n-1)/
               3))+A033500(round((n-1)/3)); fi; end;
%Y A033500 Sequence in context: A065962 A049703 A002621 this_sequence A003318 A035300 
               A035296
%Y A033500 Adjacent sequences: A033497 A033498 A033499 this_sequence A033501 A033502 
               A033503
%K A033500 nonn
%O A033500 1,2
%A A033500 N. J. A. Sloane (njas(AT)research.att.com).