id:A146845 - 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 1001-1111-1000 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 5, 13, 35, 61, 141, 427, 1351, 4209, 19211, 75163, 402147, 1986547, 12595631, 74795099, 557304499 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.1.1.0` `.1.0.0.1.0.1.0.0` `.1.1.1.1.0.1.0.0` `.1.0.0.0.0.1.1.0` `.0.1.1.0.0.0.0.1` `.0.0.1.0.1.1.1.1` `.0.0.1.0.1.0.0.1` `.0.1.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A034521 A092647 A006561 this_sequence A167710 A126359 A141408` `Adjacent sequences: A146842 A146843 A146844 this_sequence A146846 A146847 A146848`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.