id:A146459 - OEIS Search Results

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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-0111-0010 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 9, 19, 53, 91, 437, 1171, 6755, 23673, 190687, 829933, 7917835, 43969469, 541189453, 3877768971, 62027074701, 569529515425 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.0.0.0` `.0.0.1.0.1.1.0.0` `.0.1.1.1.0.1.1.0` `.1.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.1` `.0.1.1.0.1.1.1.0` `.0.0.1.1.0.1.0.0` `.0.0.0.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A043902 A048696 A046103 this_sequence A041158 A146080 A000981` `Adjacent sequences: A146456 A146457 A146458 this_sequence A146460 A146461 A146462`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

AT&T Labs Research