id:A146379 - 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 0100-1111-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 13, 25, 41, 95, 289, 1010, 4113, 15296, 63783, 305771, 1708813, 10377230, 69118879, 490255119, 4001984029, 36100718210, 369478821921, 4060660472495, 50042558173907 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.0.0.0.0` `.0.0.1.1.1.1.0.0` `.0.1.0.1.0.0.1.0` `.0.1.0.0.0.1.1.1` `.1.1.1.0.0.0.1.0` `.0.1.0.0.1.0.1.0` `.0.0.1.1.1.1.0.0` `.0.0.0.0.1.0.0.0`
	CROSSREFS	`Sequence in context: A144826 A030552 A146371 this_sequence A056714 A120074 A056706` `Adjacent sequences: A146376 A146377 A146378 this_sequence A146380 A146381 A146382`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research