A171908 a(n)= Number of 5 X 5 permutation matrices with trace n and determinant -1.
20, 30, 0, 10, 0, 0
Offset: 0
Examples
a(0)=20 because we have 20 different permutation matrices 5 x 5 with trace 0 and determinant -1.
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a(0)=20 because we have 20 different permutation matrices 5 x 5 with trace 0 and determinant -1.