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A163736 Number of nX5 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent 0
1, 4, 17, 29, 73, 265, 1200, 4888, 17897, 62437, 216583, 751019, 2584540, 8793604 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

All solutions for n=3

...1.0.0.0.1...1.0.0.1.1...1.1.0.0.1...1.1.0.1.1...1.0.1.1.1...1.1.1.1.1

...1.0.0.0.1...1.0.0.0.1...1.0.0.0.1...1.0.0.0.1...1.0.0.0.1...1.0.0.0.1

...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1

------

...1.1.1.1.1...1.1.1.0.1...1.1.1.0.1...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1

...0.0.0.0.1...1.0.0.0.1...1.0.1.0.1...1.0.0.0.1...1.0.0.0.1...1.0.0.0.1

...1.1.1.1.1...1.1.1.1.1...1.0.1.1.1...1.0.0.0.1...1.0.0.1.1...1.1.0.0.1

------

...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1...1.1.1.1.1...1.0.1.1.1

...1.0.0.0.1...1.0.0.0.1...1.0.0.0.1...1.0.0.0.0...1.0.1.0.1

...1.1.0.1.1...1.0.1.1.1...1.1.1.0.1...1.1.1.1.1...1.1.1.0.1

CROSSREFS

Sequence in context: A273430 A273073 A272330 * A249582 A127547 A302410

Adjacent sequences:  A163733 A163734 A163735 * A163737 A163738 A163739

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 03 2009

STATUS

approved

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Last modified August 19 15:40 EDT 2022. Contains 356229 sequences. (Running on oeis4.)