id:A147356 - OEIS Search Results

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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0110-0110-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 3, 9, 20, 53, 182, 863, 4532, 25697, 176361, 1505241, 14929100 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.1.1.0.0` `.0.0.0.1.1.0.0.0` `.1.0.0.1.1.0.0.1` `.1.1.1.0.0.1.1.1` `.1.1.1.0.0.1.1.1` `.1.0.0.1.1.0.0.1` `.0.0.0.1.1.0.0.0` `.0.0.1.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A065891 A147328 A026566 this_sequence A147416 A078841 A147387` `Adjacent sequences: A147353 A147354 A147355 this_sequence A147357 A147358 A147359`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.