id:A146931 - OEIS Search Results

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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1001-1111-1001 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 3, 7, 14, 22, 37, 79, 162, 380, 937, 2496, 7209, 22236, 73304, 252500, 902438, 3477063, 13836097, 60384897, 273397251, 1352635265, 7039542506, 39611966803 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.0.1.0.1.1.1` `.1.1.1.1.0.0.1.0` `.1.0.0.1.0.0.1.0` `.0.0.0.0.0.1.1.1` `.1.1.1.0.0.0.0.0` `.0.1.0.0.1.0.0.1` `.0.1.0.0.1.1.1.1` `.1.1.1.0.1.0.0.1`
	CROSSREFS	`Sequence in context: A161210 A154772 A156859 this_sequence A115285 A004232 A140462` `Adjacent sequences: A146928 A146929 A146930 this_sequence A146932 A146933 A146934`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

AT&T Labs Research