I don't suppose you will accept 1 -1 2 -2 ? Thought not! On Sat, Jan 11, 2014 at 4:51 PM, David Wilson <davidwwilson@comcast.net>wrote:
I was interested in whether there were 3 x 3 squares with row sums equal and column products equal.
It turns out these are rather easy to generate. I found the following squares
3 9 12
8 10 6
15 4 5
with row sum 24 and column product 360. I believe 24 is the minimum possible row sum.
I also found
1 10 15
12 6 8
20 4 2
With row sum 26 and column product 240, which I believe to be the minimum possible column product.
Just in case anyone cares.
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