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

Author

R. H. Hardin Oct 10 2010

Keywords

• nonn

Crossrefs

Subdiagonal of A181230.

Cf. A088310, A181232, A181233.

Formula

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

Extensions

More terms from Max Alekseyev, Jun 18 2016