id:A147237 - 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 1101-0111-0001 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 19, 37, 71, 177, 551, 1807, 6509, 26627, 139987, 688205, 4186827, 24218141, 169157335, 1233973193 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.0.1.1.0` `.1.0.0.1.1.1.0.0` `.1.1.0.1.0.0.0.0` `.0.1.0.0.0.1.1.1` `.1.1.1.0.0.0.1.0` `.0.0.0.0.1.0.1.1` `.0.0.1.1.1.0.0.1` `.0.1.1.0.1.0.0.0`
	CROSSREFS	`Sequence in context: A062291 A106082 A088786 this_sequence A117674 A114704 A167053` `Adjacent sequences: A147234 A147235 A147236 this_sequence A147238 A147239 A147240`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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