%I A160790
%S A160790 0,1,2,4,7,10,16,20,30,35,50,56
%N A160790 Vertex of a square spiral.
%Y A160790 Cf. A000027.
%Y A160790 Sequence in context: A007983 A049640 A024668 this_sequence A000376 A000375 
               A131752
%Y A160790 Adjacent sequences: A160787 A160788 A160789 this_sequence A160791 A160792 
               A160793
%K A160790 easy,more,nonn
%O A160790 0,3
%A A160790 Omar E. Pol (info(AT)polprimos.com), May 29 2009