%I #7 Mar 30 2012 18:39:18
%S 2,3,3,2,0,0,-1,0,0,-1,0,0,2,3,6,8,9,12,14,18,21,23,24,24,26,27,30,32,
%T 33,33,32,33,33,35,36,36,38,39,42,44,45,45,44,45,45,47,48,48,47,45,45,
%U 44,45,45,44,42,39,38,36,36,35,33,33,32,33,33,32,30,27,26,24,24,23,21,18,14,12,9,8,6,3,2,0,0,-1,0,0,-1,0,0,2,3,3,2,0
%N A fractal sequence.
%H Boris Gourevitch, <a href="http://membres.lycos.fr/bgourevitch/temporaires/benoit/sqrt3fractal.jpg">Graph of A083057</a>
%F a(n)=sum(k=1, n, A083056(k))
%Y Cf. A083038, A083054, A083055, A083056.
%K sign
%O 1,1
%A _Benoit Cloitre_, Apr 18 2003