id:A146729 - OEIS Search Results

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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-0111 pattern in any orientation.

+0
1

1, 1, 1, 1, 17, 35, 131, 817, 4781, 41379, 493009, 5930505, 104085935, 2108933179 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.1.1.0.1.1.1` `.1.1.1.0.1.1.0.1` `.0.0.0.0.0.0.0.0` `.1.0.1.1.0.1.1.1` `.1.1.1.0.1.1.0.1` `.0.0.0.0.0.0.0.0` `.1.0.1.1.0.1.1.1` `.1.1.1.0.1.1.0.1`
	CROSSREFS	`Sequence in context: A004921 A041570 A041572 this_sequence A041574 A144534 A041576` `Adjacent sequences: A146726 A146727 A146728 this_sequence A146730 A146731 A146732`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.