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A146687 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-1000-1111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 7, 7, 19, 19, 43, 43, 167, 167, 933 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,11
LINKS
EXAMPLE
Maximal 11 X 11 example
.0.0.1.1.1.0.1.1.1.0.0
.0.0.1.0.1.0.1.0.1.0.0
.1.1.0.0.1.0.1.0.0.1.1
.1.0.0.0.1.0.1.0.0.0.1
.1.1.1.1.0.0.0.1.1.1.1
.0.0.0.0.0.0.0.0.0.0.0
.1.1.1.1.0.0.0.1.1.1.1
.1.0.0.0.1.0.1.0.0.0.1
.1.1.0.0.1.0.1.0.0.1.1
.0.0.1.0.1.0.1.0.1.0.0
.0.0.1.1.1.0.1.1.1.0.0
CROSSREFS
Sequence in context: A146149 A263795 A070925 * A146655 A146812 A147236
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified May 16 12:41 EDT 2024. Contains 372552 sequences. (Running on oeis4.)