A171907 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A171907

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

%I #2 Mar 31 2012 10:22:15

%S 24,15,20,0,0,1

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

%e a(0)=24 because we have 24 different permutation matrices 5 x 5 with trace 0 and determinant +1.

%Y A171806, A171808, A171809, A171906, A171908

%K fini,full,nonn

%O 0,1

%A _Artur Jasinski_, Dec 31 2009