id:A146192 - OEIS Search Results

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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 101-111-100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 5, 13, 25, 47, 133, 423, 1611, 6775, 32933, 168271, 931101, 5598003, 40830563, 323824599, 3032262553, 30578017195, 362047227023 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.0.1.0.0` `.0.0.0.1.1.1.0.0` `.0.0.0.1.0.0.1.1` `.1.1.1.0.0.0.1.0` `.0.1.0.0.0.1.1.1` `.1.1.0.0.1.0.0.0` `.0.0.1.1.1.0.0.0` `.0.0.1.0.1.0.0.0`
	CROSSREFS	`Sequence in context: A146851 A146260 A147166 this_sequence A147265 A147272 A147427` `Adjacent sequences: A146189 A146190 A146191 this_sequence A146193 A146194 A146195`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research