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A171809
Number of 5 X 5 permutation matrices such that the n-th matrix power is the identity matrix and the determinant is -1.
4
0, 10, 0, 30, 0, 20
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Cf.
A171806
,
A171808
Sequence in context:
A107772
A087474
A051906
*
A167302
A302576
A214122
Adjacent sequences:
A171806
A171807
A171808
*
A171810
A171811
A171812
KEYWORD
fini
,
nonn
,
full
AUTHOR
Artur Jasinski
, Dec 18 2009, corrected Dec 28 2009
STATUS
approved
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Last modified April 19 07:38 EDT 2024. Contains 371782 sequences. (Running on oeis4.)