id:A147020 - 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 01000-11111-01000 pattern in any orientation.

+0
1

1, 1, 1, 1, 3, 1, 15, 9, 133, 33, 3625, 1063, 187163, 37071, 15421524, 1848587, 2304715815, 239808955, 763574051396, 59268926793, 494418074953389, 27771432799839 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.1.0.0.0.0.1.0` `.0.1.0.0.0.0.1.0` `.0.1.0.0.0.0.1.0` `.1.1.1.0.0.1.1.1` `.0.1.0.0.0.0.1.0`
	CROSSREFS	`Sequence in context: A035342 A039815 A147453 this_sequence A134685 A130757 A014621` `Adjacent sequences: A147017 A147018 A147019 this_sequence A147021 A147022 A147023`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

AT&T Labs Research