id:A147401 - 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 1000-1110-0111-0001 pattern in any orientation.

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1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 9, 17, 35, 101, 227, 539, 1279, 5573, 17447, 78819, 285189, 1548177, 6812379, 38874621, 188648393, 1338014585 (list; graph; listen)

	OFFSET	`1,10`
	EXAMPLE	`Maximal 10 X 10 example` `.0.0.0.0.0.0.0.1.0.0` `.0.0.0.0.0.1.1.1.0.0` `.0.0.0.0.1.1.1.0.1.1` `.0.0.0.0.1.0.0.1.1.0` `.0.0.1.1.0.0.0.1.1.0` `.0.1.1.0.0.0.1.1.0.0` `.0.1.1.0.0.1.0.0.0.0` `.1.1.0.1.1.1.0.0.0.0` `.0.0.1.1.1.0.0.0.0.0` `.0.0.1.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A059743 A000322 A020737 this_sequence A062536 A099213 A146067` `Adjacent sequences: A147398 A147399 A147400 this_sequence A147402 A147403 A147404`
	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