id:A146427 - 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 1010-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 15, 29, 65, 155, 571, 2003, 10561, 41709, 230027, 1186171, 9353621, 63521901, 612736753, 4999574693, 59290750729, 622330543047 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.1.1.0` `.1.0.1.0.0.1.0.0` `.1.1.1.1.0.1.1.0` `.0.0.0.0.0.1.0.0` `.0.0.1.0.0.0.0.0` `.0.1.1.0.1.1.1.1` `.0.0.1.0.0.1.0.1` `.0.1.1.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A001356 A104811 A131877 this_sequence A014095 A040210 A115776` `Adjacent sequences: A146424 A146425 A146426 this_sequence A146428 A146429 A146430`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research