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%I #7 Mar 23 2013 15:11:05
%S 0,0,0,0,7,24,45,70,121,180,273,406,555,784,1071
%N Number of triangular regions in the exterior of a regular n-gon with all diagonals drawn.
%Y Cf. A062361, A217746.
%K nonn
%O 3,5
%A _Martin Renner_, Mar 23 2013