id:A146222 - 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 101-111-010 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 8, 19, 32, 59, 168, 529, 2001, 7331, 32274, 148084, 749186, 4153139, 26410348, 177997054, 1409667475, 11785334777, 115210607000, 1184859282420, 13940662127003 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.0.1.0` `.1.1.0.0.1.1.1.0` `.0.1.1.0.0.1.0.0` `.1.1.0.0.0.0.0.0` `.0.0.0.0.0.0.1.1` `.0.0.1.0.0.1.1.0` `.0.1.1.1.0.0.1.1` `.0.1.0.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A076096 A017485 A146270 this_sequence A140672 A135027 A158916` `Adjacent sequences: A146219 A146220 A146221 this_sequence A146223 A146224 A146225`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research