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A181232 Number of nX(n+2) binary matrices with all rows unique and all columns unique 3
0, 24, 6720, 5644800, 16388749440, 172145618789760, 6709378999665162240, 988932080423985278515200, 559938250258499272920457420800, 1233183626500802426354472388092518400, 10663689261713618730124837637890877517004800 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..11.

FORMULA

a(n) = A181230(n,n+2).

CROSSREFS

Second subdiagonal of A181230.

Cf. A088310, A181231, A181233.

Sequence in context: A175672 A181749 A266312 * A275054 A088616 A158042

Adjacent sequences:  A181229 A181230 A181231 * A181233 A181234 A181235

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 10 2010

STATUS

approved

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Last modified September 25 16:45 EDT 2016. Contains 276540 sequences.