A163732 - OEIS

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A163732

Number of nXn binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent

1, 1, 5, 13, 73, 1053, 39682 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	LINKS	`Table of n, a(n) for n=1..7.`
	EXAMPLE	`All solutions for n=4` `...1.0.0.1...1.1.0.1...1.0.1.1...1.1.1.1...1.1.1.1...1.1.1.1...1.1.1.1` `...1.0.0.1...1.0.0.1...1.0.0.1...1.0.0.1...0.0.0.1...1.0.0.1...0.0.0.1` `...1.0.0.1...1.0.0.1...1.0.0.1...1.0.0.1...0.0.0.1...0.0.0.1...1.0.0.1` `...1.1.1.1...1.1.1.1...1.1.1.1...1.1.1.1...1.1.1.1...1.1.1.1...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` `...1.0.0.0...1.0.0.0...1.0.0.1...1.0.0.1...1.0.0.1...1.0.0.1` `...1.0.0.0...1.0.0.1...1.0.0.0...1.0.0.1...1.0.0.1...1.0.0.1` `...1.1.1.1...1.1.1.1...1.1.1.1...1.0.0.1...1.0.1.1...1.1.0.1`
	CROSSREFS	`Sequence in context: A115329 A137702 A140120 * A208821 A064169 A081525` `Adjacent sequences: A163729 A163730 A163731 * A163733 A163734 A163735`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Aug 03 2009`
	STATUS	`approved`

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Last modified May 24 20:01 EDT 2013. Contains 225630 sequences.