id:A146145 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in an em 1,1 1,2 2,2 2,3 3,3 in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 55, 103, 1119, 2577, 44665, 124149, 7114043, 25427717, 3924887627, 18243132743, 3963931303667, 23264020620581, 10118413718310299, 75049948209301973, 78694111409932613371, 745465591245660563073 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.1.1.0.0.1.1.0` `.1.1.0.0.0.0.1.1` `.1.0.0.0.0.0.0.1` `.0.1.1.0.0.1.1.0` `.1.1.0.0.0.0.1.1` `.1.0.1.0.0.1.0.1` `.0.1.1.0.0.1.1.0` `.1.1.0.0.0.0.1.1`
	CROSSREFS	`Sequence in context: A128880 A039596 A115377 this_sequence A044144 A044525 A118151` `Adjacent sequences: A146142 A146143 A146144 this_sequence A146146 A146147 A146148`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research