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A146852 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-1111-0001 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 17, 17, 37, 37, 137, 137, 741, 741 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,13
LINKS
EXAMPLE
Maximal 13 X 13 example
.0.0.0.1.1.0.0.0.1.1.0.0.0
.0.0.0.1.1.0.0.0.1.1.0.0.0
.0.0.0.0.1.0.0.0.1.0.0.0.0
.1.1.0.0.1.1.0.1.1.0.0.1.1
.1.1.1.1.0.0.0.0.0.1.1.1.1
.0.0.0.1.0.0.0.0.0.1.0.0.0
.0.0.0.0.0.0.0.0.0.0.0.0.0
.0.0.0.1.0.0.0.0.0.1.0.0.0
.1.1.1.1.0.0.0.0.0.1.1.1.1
.1.1.0.0.1.1.0.1.1.0.0.1.1
.0.0.0.0.1.0.0.0.1.0.0.0.0
.0.0.0.1.1.0.0.0.1.1.0.0.0
.0.0.0.1.1.0.0.0.1.1.0.0.0
CROSSREFS
Sequence in context: A075684 A146876 A147206 * A146237 A282501 A147167
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified October 1 22:38 EDT 2023. Contains 365828 sequences. (Running on oeis4.)