id:A147435 - 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 1010-1111-0101 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 13, 21, 57, 259, 1017, 4255, 25913, 160493, 1488777, 11698881, 154711435, 1737788683, 30091739925 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.1.0.0.0.1.1` `.1.1.1.1.0.1.1.0` `.0.1.0.1.0.0.1.1` `.0.0.0.0.0.1.1.0` `.0.1.1.0.0.0.0.0` `.1.1.0.0.1.0.1.0` `.0.1.1.0.1.1.1.1` `.1.1.0.0.0.1.0.1`
	CROSSREFS	`Sequence in context: A137194 A053659 A066630 this_sequence A056512 A056523 A158998` `Adjacent sequences: A147432 A147433 A147434 this_sequence A147436 A147437 A147438`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.