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A146936 Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1111-1111 pattern in any orientation. 0
1, 1, 1, 1, 1, 3, 7, 14, 39, 110, 377, 1728, 8445, 46261, 295085, 2140608, 18281422, 182971434, 2102657419, 27813973723, 424019281880, 7465054408643, 152329530023565, 3599461276657166, 98302190158216996, 3100794527661403207 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,6
LINKS
EXAMPLE
Maximal 8 X 8 example
.0.0.1.1.1.1.0.0
.0.0.1.1.1.1.0.0
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
.0.0.1.1.1.1.0.0
.0.0.1.1.1.1.0.0
CROSSREFS
Sequence in context: A146920 A079939 A147006 * A184264 A298913 A266019
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified May 20 08:05 EDT 2024. Contains 372703 sequences. (Running on oeis4.)