id:A147411 - 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 1001-1001-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 5, 13, 27, 43, 73, 179, 423, 1083, 3071, 10101, 37829, 144853, 562367, 2218397, 9164725, 42914033, 209532563 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.0.1.0.1.1.1` `.1.0.0.1.0.1.0.0` `.1.1.1.1.0.1.0.0` `.0.0.0.0.0.1.1.1` `.1.1.1.0.0.0.0.0` `.0.0.1.0.1.1.1.1` `.0.0.1.0.1.0.0.1` `.1.1.1.0.1.0.0.1`
	CROSSREFS	`Sequence in context: A008778 A014813 A160420 this_sequence A008580 A123326 A025193` `Adjacent sequences: A147408 A147409 A147410 this_sequence A147412 A147413 A147414`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 24 14:21 EST 2009. Contains 167438 sequences.

AT&T Labs Research