Goldbach partition by ksk

3.upto(?\x96){|_|$><<[o=2*_,x=':',(3.._).map{|_|" #{_}+#$."if/^(::+)\1+$/!~x*_+$/+x*$.=o-_},$/]}

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

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