id:A146195 - 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 101-111-100 pattern in any orientation.

+0
1

1, 1, 1, 1, 5, 37, 165, 1001, 4705, 34363, 367959, 6088505, 78978585, 2279840895, 57010330201, 2094575171305, 78104783670439 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.1.0.1` `.0.0.0.0.0.1.1.1` `.0.0.1.1.0.0.0.1` `.0.0.1.0.1.1.1.0` `.0.1.1.1.0.1.0.0` `.1.0.0.0.1.1.0.0` `.1.1.1.0.0.0.0.0` `.1.0.1.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A023289 A006468 A144954 this_sequence A095924 A088582 A088583` `Adjacent sequences: A146192 A146193 A146194 this_sequence A146196 A146197 A146198`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.