id:A147364 - 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 01110-11111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 2, 3, 6, 9, 16, 23, 72, 173, 621, 1620, 5393, 14347, 63207, 232978, 1333190, 5780677, 34593611, 163090674, 1165840626, 6871746297 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.1.1.1.0` `.0.0.0.1.1.1.0.1` `.1.0.0.0.0.0.1.1` `.1.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.1` `.1.1.0.0.0.0.0.1` `.1.0.1.1.1.0.0.0` `.0.1.1.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A003244 A115995 A051057 this_sequence A147227 A147063 A007865` `Adjacent sequences: A147361 A147362 A147363 this_sequence A147365 A147366 A147367`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research