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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 0
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

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Last modified October 17 05:57 EDT 2018. Contains 316275 sequences. (Running on oeis4.)