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An equi-$n$-square is an $n$ by $n$ array of cells filled with the symbols $1,2,\dots,n$ so that each symbol occurs exactly $n$ times. (Every Latin square of order $n$ is an equi-$n$-square, but the ...

I feel like I should know the answer to this. I did some Googling and didn't easily find the answer... Question: Is counting Latin squares #P-complete? Obviously the corresponding decision problem &...