[seqfan] Re: Permutations along all diagonals and subdi

[jens at voss-ahrensburg.de]

> It seems there are no nXn solutions, at least for cases
> I can compute, up to 9x9.

This is a trivial fact: Since all corners have to be 1s,
there is no way for a "full diagonal" of an nXn-matrix to
be a permutation of 1..n (except of course for the case
n=1).

Regards,
Jens
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