id:A146593 - 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 0110-1111-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 21, 51, 327, 1675, 7635, 91085, 1248699, 15566521, 331389569, 6715390709, 209774176475, 7949748988669, 377908421650787 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.1.1.0` `.0.1.0.0.1.1.1.1` `.1.1.0.0.0.1.0.0` `.1.1.1.0.0.0.1.0` `.0.1.0.0.0.1.1.1` `.0.0.1.0.0.0.1.1` `.1.1.1.1.0.0.1.0` `.0.1.1.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A053178 A166150 A146838 this_sequence A043133 A039310 A043913` `Adjacent sequences: A146590 A146591 A146592 this_sequence A146594 A146595 A146596`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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

AT&T Labs Research