id:A146178 - 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 110-100-111 pattern in any orientation.

+0
1

1, 1, 1, 1, 5, 29, 161, 905, 3749, 24539, 286931, 3046339, 51706885, 1159037433, 32728917231, 966827028811 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.1.1.1.0` `.1.1.1.0.1.0.1.0` `.1.0.1.0.1.0.0.1` `.1.0.0.1.0.1.0.1` `.0.1.0.1.0.1.1.1` `.0.1.1.1.0.0.0.0` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A065541 A060926 A098780 this_sequence A015537 A141812 A001653` `Adjacent sequences: A146175 A146176 A146177 this_sequence A146179 A146180 A146181`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.