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A296318
Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 neighboring 1.
1
9, 132, 902, 8470, 77426, 676269, 6069953, 54182821, 482859661, 4309680012, 38447587452, 343001529054, 3060175277029, 27301498644398, 243572477909485, 2173052663274029, 19387068214074941, 172963318405155953
OFFSET
1,1
COMMENTS
Column 6 of A296320.
FORMULA
Empirical recurrence of order 85 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..1..1..0..0. .1..0..1..0..0..0. .1..1..0..0..1..0. .0..0..1..0..0..1
..0..0..0..0..0..0. .1..0..1..0..0..1. .0..0..0..1..0..0. .0..0..1..0..0..1
..0..1..0..0..0..0. .0..0..0..0..1..0. .0..0..0..0..0..0. .0..0..0..0..0..0
..0..1..0..0..0..1. .1..1..0..0..0..0. .1..1..0..0..0..1. .0..0..0..1..0..1
..0..0..0..0..1..0. .0..0..1..1..0..0. .0..0..1..1..0..1. .0..0..1..0..0..1
CROSSREFS
Cf. A296320.
Sequence in context: A194895 A112123 A282820 * A167253 A366017 A097999
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2017
STATUS
approved