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A181276
Number of nX(n+2) binary matrices M with rows in strictly increasing order and rows of M*Mtranspose (mod 2) in strictly decreasing order
0
8, 48, 766, 28924, 3409059, 1126220822
OFFSET
1,1
COMMENTS
Superdiagonal 2 of A181274
EXAMPLE
M and M*Mtranspose (mod 2) for 3X5
..0..0..0..1..0......1..1..1
..0..1..0..1..1......1..1..0
..1..1..0..1..0......1..0..1
CROSSREFS
Sequence in context: A108214 A249514 A279739 * A010568 A080493 A355434
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 2010
STATUS
approved