id:A146149 - OEIS Search Results

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Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in an em 1,1 1,2 2,2 2,3 3,3 in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 3, 7, 7, 17, 17, 57, 57, 295, 295, 1823, 1823, 12191, 12191, 109351, 109351, 1406131, 1406131, 21111023, 21111023, 390067193, 390067193, 9744306045, 9744306045 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.0.1.0.0` `.0.1.1.0.0.1.1.0` `.1.1.0.0.0.0.1.1` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.1.1.0.0.0.0.1.1` `.0.1.1.0.0.1.1.0` `.0.0.1.0.0.1.0.0`
	CROSSREFS	`Sequence in context: A146450 A147144 A152113 this_sequence A070925 A146687 A146655` `Adjacent sequences: A146146 A146147 A146148 this_sequence A146150 A146151 A146152`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

AT&T Labs Research