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%I #7 Jun 19 2013 13:55:28
%S 12,20,28,33,41,46,51,54,62,67,72,75,83,88,93,96,101,104,112,117,122,
%T 125,130,133,138,141,144
%N Minimum number of unit segments required to construct n unit cubes.
%C This generalizes the 2-dimensional version which is A078633.
%e a(2)=20 because 12 unit segments are required to construct each cube but 4 units are shared. I.e., a(2)=12+8=20.
%Y Cf. A078633.
%K easy,nonn
%O 1,1
%A _Ron R. King_, Apr 22 2006