Matteo Hoch
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Matteo Hoch
In Pinter C.2 n is explicitly mentioned as fixed. In C.5 it is "some integer", the selected answers for C.5 prove the case where it is not fixed. The proof...
1 2 3 4 2 1 4 3 and 1 2 3 4 4 3 2 1 Are also solutions since the negative cancels.