A181231 Number of nX(n+1) binary matrices with all rows unique and all columns unique

2, 24, 1608, 483840, 595506240, 2881362718080, 53971723989630720, 3905883638351009925120, 1097181147335459123569766400, 1204583321001156830831556548812800, 5203385513364984367494095906614850764800, 88913167483454945080054825759528983277687603200

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Formula

a(n) = A181230(n,n+1).

Crossrefs

Subdiagonal of A181230.

Cf. A088310, A181232, A181233.

Sequence in context: A028365 A094050 A000479 * A111427 A081955 A292797

Adjacent sequences: A181228 A181229 A181230 * A181232 A181233 A181234

Keyword

nonn

Author

R. H. Hardin Oct 10 2010

Extensions

More terms from Max Alekseyev, Jun 18 2016

Status

approved