id:A147407 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1001-1001-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 5, 9, 21, 25, 109, 61, 921, 265, 6141, 2725, 55969, 40501, 883289, 485293, 21802429, 5980517, 645447537, 124941205 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.1.1.1.0.0.1.1.1` `.0.0.1.0.0.1.0.0` `.0.0.1.0.0.1.0.0` `.1.1.1.0.0.1.1.1` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A147552 A147562 A162795 this_sequence A146867 A068481 A146827` `Adjacent sequences: A147404 A147405 A147406 this_sequence A147408 A147409 A147410`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

AT&T Labs Research