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A171908 a(n)= Number of 5 X 5 permutation matrices with trace n and determinant -1 2

%I

%S 20,30,0,10,0,0

%N a(n)= Number of 5 X 5 permutation matrices with trace n and determinant -1

%e a(0)=20 because we have 20 different permutation matrices 5 x 5 with trace 0 and determinant -1.

%Y A171806, A171808, A171809, A171906, A171907

%K fini,full,nonn

%O 0,1

%A _Artur Jasinski_, Dec 31 2009

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Last modified May 13 12:16 EDT 2021. Contains 343839 sequences. (Running on oeis4.)