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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
FORMULA
a(n) = A181230(n,n+2).
CROSSREFS
Second subdiagonal of A181230.
Sequence in context: A175672 A181749 A266312 * A275054 A088616 A158042
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 2010
STATUS
approved

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Last modified July 21 12:25 EDT 2024. Contains 374472 sequences. (Running on oeis4.)