A181276 - OEIS

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

8, 48, 766, 28924, 3409059, 1126220822 (list; graph; refs; listen; history; text; internal format)

	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`

Last modified July 2 13:44 EDT 2022. Contains 355007 sequences. (Running on oeis4.)