id:A146460 - 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 1100-0111-0010 pattern in any orientation.

+0
1

1, 1, 1, 1, 5, 25, 87, 503, 2831, 25037, 243793, 3762955, 62868913, 1572482009, 42577954723, 1734990453303 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.0.0.0.0` `.1.1.1.0.0.0.0.0` `.0.1.0.0.0.0.1.0` `.0.0.1.1.0.1.1.1` `.1.1.1.0.1.1.0.0` `.0.1.0.0.0.0.1.0` `.0.0.0.0.0.1.1.1` `.0.0.0.0.1.1.0.0`
	CROSSREFS	`Sequence in context: A018212 A147274 A147034 this_sequence A083090 A147177 A057255` `Adjacent sequences: A146457 A146458 A146459 this_sequence A146461 A146462 A146463`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.