id:A146055 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 2X3 U in any orientation.

+0
1

1, 1, 5, 1, 19, 9, 285, 231, 16083, 5087, 1835713, 304405, 353122721, 80250539, 202921921043, 41930288075, 327077447429739, 40565746729487, 1135093267840644915, 110051860951495273, 8965200194852051792065 (list; graph; listen)

	OFFSET	`1,3`
	EXAMPLE	`Maximal 8 X 8 example` `.1.1.1.0.0.1.1.1` `.1.0.1.0.0.1.0.1` `.0.0.0.0.0.0.0.0` `.1.0.1.0.0.1.0.1` `.1.1.1.0.0.1.1.1` `.0.0.0.0.0.0.0.0` `.1.1.1.0.0.1.1.1` `.1.0.1.0.0.1.0.1`
	CROSSREFS	`Sequence in context: A008971 A151335 A055584 this_sequence A147437 A147369 A066480` `Adjacent sequences: A146052 A146053 A146054 this_sequence A146056 A146057 A146058`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 26 2008`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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