BBC Russian

A209393

Number of nX4 1..4 arrays with every element value z a city block distance of exactly z from another element value z

3, 152, 22416, 4488765, 816320455 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 4 of A209394`
	LINKS	`Table of n, a(n) for n=1..5.`
	EXAMPLE	`Some solutions for n=3` `..3..3..1..4....3..3..2..4....3..3..3..3....1..1..3..1....4..2..2..4` `..4..3..1..1....4..2..3..3....3..3..3..3....3..2..1..1....1..1..2..4` `..3..3..3..3....2..4..3..4....3..2..3..2....2..1..1..1....3..4..2..3`
	CROSSREFS	`Sequence in context: A100203 A287319 A189248 * A095225 A039934 A156990` `Adjacent sequences: A209390 A209391 A209392 * A209394 A209395 A209396`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Mar 07 2012`
	STATUS	`approved`

Last modified September 11 16:20 EDT 2024. Contains 375836 sequences. (Running on oeis4.)