id:A147015 - 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 01000-11111-00010 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 11, 17, 29, 49, 193, 509, 1945, 5173, 19089, 57135, 304805, 1236463, 7710953, 34938029, 239632727, 1249524805, 10579289505, 68493745825 (list; graph; listen)

	OFFSET	`1,9`
	EXAMPLE	`Maximal 9 X 9 example` `.0.0.0.0.0.1.0.0.0` `.0.0.1.1.1.1.1.0.0` `.0.1.0.1.0.0.0.1.0` `.0.1.1.0.0.0.0.1.1` `.0.1.0.0.0.0.0.1.0` `.1.1.0.0.0.0.1.1.0` `.0.1.0.0.0.1.0.1.0` `.0.0.1.1.1.1.1.0.0` `.0.0.0.1.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A023218 A073022 A129694 this_sequence A147023 A108402 A090795` `Adjacent sequences: A147012 A147013 A147014 this_sequence A147016 A147017 A147018`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research