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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: A049177 A378263 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 November 29 00:35 EST 2024. Contains 378208 sequences.
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