A224051 - OEIS

A224051

Number of n X n 0..2 arrays with rows and columns unimodal and antidiagonals nondecreasing

3, 54, 1232, 27246, 568107, 11231300, 212819499, 3903149379, 69818587635, 1225169731998 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A224057`
	LINKS	`Table of n, a(n) for n=1..10.`
	EXAMPLE	`Some solutions for n=3` `..2..1..1....0..1..0....0..0..0....2..1..0....1..1..0....2..0..0....0..0..0` `..2..1..1....1..1..1....2..2..0....2..0..0....1..2..0....2..1..1....0..0..2` `..1..2..1....1..1..0....2..2..2....0..0..0....2..2..1....2..2..1....1..2..0`
	CROSSREFS	`Sequence in context: A223926 A003776 A222203 * A355365 A317663 A323325` `Adjacent sequences: A224048 A224049 A224050 * A224052 A224053 A224054`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Mar 30 2013`
	STATUS	`approved`

Last modified February 4 03:47 EST 2023. Contains 360045 sequences. (Running on oeis4.)