id:A147408 - 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 1001-1001-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 5, 13, 25, 49, 175, 865, 4191, 18461, 94551, 650857, 5436423, 49032533, 472638523, 5306220921, 72329183333, 1150334935553, 20498079126697, 410408073960755 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.1.0.0.1` `.0.0.0.0.1.0.0.1` `.0.0.0.0.1.1.1.1` `.0.1.1.1.0.0.0.0` `.0.0.0.1.0.0.0.0` `.0.0.0.1.0.0.0.0` `.0.1.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A147265 A147272 A147427 this_sequence A147090 A097117 A146140` `Adjacent sequences: A147405 A147406 A147407 this_sequence A147409 A147410 A147411`
	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