A204793 - OEIS

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A204793

Number of (n+1)X(n+1) 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

16, 240, 6537, 422426, 60519533, 20321241222, 15605413576718, 27766411206607643, 112893571720052223367, 1058197232959093882740859 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A204800`
	LINKS	`Table of n, a(n) for n=1..10.`
	EXAMPLE	`Some solutions for n=4` `..1..0..1..0..1....1..1..1..1..1....1..0..0..1..0....1..1..1..0..1` `..0..0..1..0..1....0..0..0..0..0....0..0..0..0..0....1..0..0..0..1` `..1..0..0..0..1....1..1..1..0..1....1..0..0..1..0....0..0..1..0..1` `..0..0..1..0..1....1..1..1..0..0....1..0..0..1..1....1..0..0..0..0` `..0..0..0..0..0....0..0..0..0..0....1..0..0..0..1....1..0..0..1..0`
	CROSSREFS	`Sequence in context: A170735 A058667 A005619 * A173605 A175720 A342031` `Adjacent sequences: A204790 A204791 A204792 * A204794 A204795 A204796`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 19 2012`
	STATUS	`approved`

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Last modified December 7 21:37 EST 2023. Contains 367662 sequences. (Running on oeis4.)