A145809 - OEIS

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A145809

Number of islands of ones fitting in an n X n array with all ones connected only either three adjacent vertically or three adjacent horizontally.

0, 0, 2, 2, 4, 6, 8, 10, 14, 15, 20, 24 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	EXAMPLE	`8 X 8 example with 10 islands` `.0.1.1.1.0.1.1.1` `.1.0.0.0.0.0.0.0` `.1.0.0.0.0.1.1.1` `.1.0.1.1.1.0.0.0` `.0.0.0.0.0.1.1.1` `.1.0.1.1.1.0.0.0` `.1.0.0.0.0.1.1.1` `.1.0.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A202102 A118303 A145817 * A116859 A179999 A147982` `Adjacent sequences: A145806 A145807 A145808 * A145810 A145811 A145812`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Oct 20 2008`

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Last modified February 15 18:19 EST 2012. Contains 205835 sequences.