id:A146282 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 111-110-111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 9, 5, 29, 17, 313, 37, 1657, 109, 19905, 2661, 319705, 46501, 11762329, 480069, 357135757, 5729689, 14191646903, 346242155, 884769592659, 24356919567 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.1.0.0.1.0.1` `.1.1.1.0.0.1.1.1` `.1.1.1.0.0.1.1.1` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.1.1.1.0.0.1.1.1` `.1.1.1.0.0.1.1.1` `.1.0.1.0.0.1.0.1`
	CROSSREFS	`Sequence in context: A078086 A061467 A103168 this_sequence A117911 A061041 A035417` `Adjacent sequences: A146279 A146280 A146281 this_sequence A146283 A146284 A146285`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research