id:A146924 - 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 0110-1111-0110 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 5, 13, 32, 116, 329, 1343, 7578, 43263, 292424, 2337772, 20731810, 226646472, 2872512529, 41869404152, 707811350778, 14078518669729, 324770949354296 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.0.0.0` `.0.0.1.1.1.1.0.0` `.0.1.0.1.1.0.1.0` `.1.1.1.0.0.1.1.1` `.1.1.1.0.0.1.1.1` `.0.1.0.1.1.0.1.0` `.0.0.1.1.1.1.0.0` `.0.0.0.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A066688 A046789 A066184 this_sequence A001981 A141025 A100227` `Adjacent sequences: A146921 A146922 A146923 this_sequence A146925 A146926 A146927`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research