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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 (list; graph; refs; listen; history; text; internal format)
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 June 7 01:26 EDT 2020. Contains 334836 sequences. (Running on oeis4.)