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A181269 Number of nX(n+3) binary matrices M with rows in strictly increasing order and rows of M*Mtranspose (mod 2) in strictly increasing order 0
16, 188, 6236, 513260, 120854852, 79509209528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Superdiagonal 3 of A181266

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

M and M*Mtranspose (mod 2) for 3X6

..0..0..0..1..0..1......0..0..1

..0..1..1..1..1..1......0..1..1

..1..0..1..0..1..1......1..1..0

CROSSREFS

Sequence in context: A016292 A231834 A181277 * A004333 A016237 A036735

Adjacent sequences:  A181266 A181267 A181268 * A181270 A181271 A181272

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 10 2010

STATUS

approved

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Last modified November 15 14:06 EST 2019. Contains 329149 sequences. (Running on oeis4.)