f=math.floor n=3^io.read()-1 for y=0,n do for x=0,n do io.write((x%3*(y%3)==1 or f(x/3%3)*f(y/3%3)==1 or f(x/9%3)*f(y/9%3)==1)and' 'or'::')end print()end

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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