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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
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OFFSET
1,1
COMMENTS
Superdiagonal 2 of
A181274
LINKS
Table of n, a(n) for n=1..6.
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
Adjacent sequences:
A181273
A181274
A181275
*
A181277
A181278
A181279
KEYWORD
nonn
AUTHOR
R. H. Hardin
Oct 10 2010
STATUS
approved
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Last modified August 22 10:30 EDT 2024. Contains 375369 sequences. (Running on oeis4.)