id:A146456 - OEIS Search Results

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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0010 pattern in any orientation.

+0
1

1, 1, 1, 1, 3, 11, 31, 113, 699, 5221, 45431, 522967, 8016431, 151899461, 3697922071, 116129380717, 4687373528579, 240290198107395, 15846179275453485, 1336337926181858025 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.1.1.0.0.0.0.0` `.1.0.1.1.1.0.0.0` `.1.1.0.1.0.0.0.0` `.0.1.1.0.0.0.1.0` `.0.1.0.0.0.1.1.0` `.0.0.0.0.1.0.1.1` `.0.0.0.1.1.1.0.1` `.0.0.0.0.0.1.1.0`
	CROSSREFS	`Sequence in context: A119901 A106934 A146581 this_sequence A095692 A163421 A076477` `Adjacent sequences: A146453 A146454 A146455 this_sequence A146457 A146458 A146459`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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

AT&T Labs Research