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A146583 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1100-0111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 11, 11, 31, 31, 107, 107, 597, 597, 4235, 4235, 35993, 35993 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,11
LINKS
EXAMPLE
Maximal 11 X 11 example
.0.0.0.1.0.0.0.1.0.0.0
.0.0.1.1.1.0.1.1.1.0.0
.0.1.0.0.1.0.1.0.0.1.0
.1.1.0.0.1.0.1.0.0.1.1
.0.1.1.1.0.0.0.1.1.1.0
.0.0.0.0.0.0.0.0.0.0.0
.0.1.1.1.0.0.0.1.1.1.0
.1.1.0.0.1.0.1.0.0.1.1
.0.1.0.0.1.0.1.0.0.1.0
.0.0.1.1.1.0.1.1.1.0.0
.0.0.0.1.0.0.0.1.0.0.0
CROSSREFS
Sequence in context: A147120 A147159 A146828 * A146458 A122573 A230011
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified September 16 08:53 EDT 2024. Contains 375959 sequences. (Running on oeis4.)