id:A147103 - 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 1000-1000-1100-0111 pattern in any orientation.

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1

1, 1, 1, 1, 3, 3, 7, 7, 33, 45, 155, 235, 1041, 1865, 10449, 21963, 145411, 358505, 2858721, 8246787, 73843755, 250514431, 2686708159, 10696190873, 134925870103, 635649150983, 9570082275351 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.1.1.1.0.0` `.0.0.0.0.0.1.1.0` `.0.1.0.0.0.0.1.0` `.0.1.0.0.0.0.1.0` `.0.1.1.0.0.0.0.0` `.0.0.1.1.1.0.0.0` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A107222 A050613 A145940 this_sequence A003133 A021300 A121527` `Adjacent sequences: A147100 A147101 A147102 this_sequence A147104 A147105 A147106`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research