id:A147479 - 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 1100-1111-1100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 9, 20, 33, 56, 123, 372, 1117, 3761, 13503 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.1.1.0` `.1.1.0.0.1.1.1.0` `.1.1.1.1.0.1.0.0` `.1.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.1` `.0.0.1.0.1.1.1.1` `.0.1.1.1.0.0.1.1` `.0.1.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A017497 A059108 A028566 this_sequence A146680 A143704 A128153` `Adjacent sequences: A147476 A147477 A147478 this_sequence A147480 A147481 A147482`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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