1,2

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;

Sequence in context: A065962 A049703 A002621 this_sequence A003318 A035300 A035296

Adjacent sequences: A033497 A033498 A033499 this_sequence A033501 A033502 A033503

nonn

N. J. A. Sloane (njas(AT)research.att.com).