id:A146916 - OEIS Search Results

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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.

+0
1

1, 1, 1, 3, 1, 5, 9, 25, 65, 311, 777, 5163, 19629, 179101, 938309, 11522939, 83049733, 1385281995, 13583413581, 310426685067, 4145583315227, 129859229238145 (list; graph; listen)

	OFFSET	`1,4`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.0.0.1.0` `.0.1.1.1.0.1.1.1` `.1.1.1.0.1.1.1.0` `.0.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.0` `.0.1.1.1.0.1.1.1` `.1.1.1.0.1.1.1.0` `.0.1.0.0.0.1.0.0`
	CROSSREFS	`Sequence in context: A128821 A029723 A055199 this_sequence A146255 A122366 A103327` `Adjacent sequences: A146913 A146914 A146915 this_sequence A146917 A146918 A146919`
	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