id:A147412 - 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 1001-1001-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 5, 17, 41, 185, 633, 2157, 7997, 47735, 277209, 2208471, 17450513, 197122185, 2176282667, 31077679505 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.1.1.1.0.1.1.1.1` `.1.0.0.0.1.0.0.1` `.1.0.0.0.1.0.0.1` `.1.1.1.0.0.0.0.0` `.0.0.0.0.0.1.1.1` `.1.0.0.1.0.0.0.1` `.1.0.0.1.0.0.0.1` `.1.1.1.1.0.1.1.1`
	CROSSREFS	`Sequence in context: A146794 A146834 A130739 this_sequence A111268 A106973 A102264` `Adjacent sequences: A147409 A147410 A147411 this_sequence A147413 A147414 A147415`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.