A171906 - OEIS

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A171906

a(n) = number of 5 X 5 permutation matrices with trace n

2

44, 45, 20, 10, 0, 1

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OFFSET

0,1

LINKS

Table of n, a(n) for n=0..5.

EXAMPLE

a(0)=44 because we have 44 different permutation matrices 5 x 5 with trace 0.

CROSSREFS

A171806, A171808, A171809, A171907, A171908

Sequence in context: A109644 A165865 A239534 * A059070 A059071 A085519

Adjacent sequences: A171903 A171904 A171905 * A171907 A171908 A171909

KEYWORD

nonn

AUTHOR

Artur Jasinski, Dec 31 2009

STATUS

approved