A217890 - OEIS

A217890

Number of n element 1..n arrays with each element the minimum of 7 adjacent elements of a permutation of 1..n+6 of n+6 elements

1, 3, 11, 45, 197, 903, 4279, 20792, 103044, 518864, 2647244, 13657284 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Column 7 of A217891`
	LINKS	`Table of n, a(n) for n=1..12.`
	EXAMPLE	`Some solutions for n=4` `..3....1....2....3....1....3....1....1....3....2....1....4....1....1....1....1` `..3....1....2....4....4....3....3....2....4....3....2....3....2....1....1....1` `..2....1....2....2....2....1....2....4....1....1....3....2....2....2....3....4` `..1....3....1....1....2....1....2....3....1....1....4....1....4....4....3....3`
	CROSSREFS	`Sequence in context: A146086 A049177 A217889 * A001003 A080243 A151131` `Adjacent sequences: A217887 A217888 A217889 * A217891 A217892 A217893`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Oct 14 2012`
	STATUS	`approved`