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Old 2008-05-21, 12:54   #10
davar55
 
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May 2004
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Here's another solution:

041 005 007 071 003
013 023 029 031 067
059 053 043 047 037
019 011 089 061 017
079 101 083 097 073

Rows: 127,163,239,197,433
Columns: 211,193,251,307,197
Diagonals: 241,167

(Standard deviation: 76.7)

An alternative measure is simply mini-max: minimize the largest sum.
By that measure, lavalamp's solution is a better one.
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