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A217889 Number of n element 1..n arrays with each element the minimum of 6 adjacent elements of a permutation of 1..n+5 of n+5 elements 0
1, 3, 11, 45, 197, 903, 4278, 20788, 103050, 519268, 2653278, 13725388 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A217891

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=4

..2....2....1....1....3....4....3....1....1....4....1....2....1....3....2....4

..4....2....1....3....1....2....2....1....2....3....1....3....4....3....2....2

..3....2....1....4....1....2....2....1....4....1....2....1....3....1....4....1

..1....1....4....2....1....1....1....1....3....1....4....1....2....1....1....1

CROSSREFS

Sequence in context: A217888 A146086 A049177 * A217890 A001003 A080243

Adjacent sequences:  A217886 A217887 A217888 * A217890 A217891 A217892

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 14 2012

STATUS

approved

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Last modified February 21 19:50 EST 2018. Contains 299423 sequences. (Running on oeis4.)