id:A147357 - OEIS Search Results

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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0110-0110-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 2, 3, 8, 13, 22, 45, 113, 275, 994, 2604, 9935, 31457, 134870, 529162, 2763867, 12621629, 78239209, 410491794, 3050461822 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.1.1.0.0` `.0.0.0.1.1.0.0.0` `.1.0.0.1.1.0.0.1` `.1.1.1.0.0.1.1.1` `.1.1.1.0.0.1.1.1` `.1.0.0.1.1.0.0.1` `.0.0.0.1.1.0.0.0` `.0.0.1.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A142880 A147329 A147417 this_sequence A004138 A116503 A105204` `Adjacent sequences: A147354 A147355 A147356 this_sequence A147358 A147359 A147360`
	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