id:A146062 - 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 2X3 U in any orientation.

+0
1

1, 1, 1, 5, 13, 37, 193, 825, 4833, 42541, 409765, 5652913, 85462407, 1745289105, 41548085965, 1274611587285, 46878706682435, 2328792987017875 (list; graph; listen)

	OFFSET	`1,4`
	EXAMPLE	`Maximal 8 X 8 example` `.1.1.1.0.0.1.1.1` `.1.0.1.0.0.1.0.1` `.0.0.0.0.0.0.0.0` `.1.0.1.0.0.1.1.1` `.1.1.1.0.0.1.0.1` `.0.0.0.0.0.0.0.0` `.1.0.1.0.0.1.0.1` `.1.1.1.0.0.1.1.1`
	CROSSREFS	`Sequence in context: A125734 A146925 A146452 this_sequence A129924 A080143 A077919` `Adjacent sequences: A146059 A146060 A146061 this_sequence A146063 A146064 A146065`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 26 2008`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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