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A147206 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-0101-0111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 17, 17, 37, 37, 97, 97, 589, 589 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,13

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

Maximal 13 X 13 example

.0.0.0.1.1.0.0.0.1.1.0.0.0

.0.0.0.1.0.0.0.0.0.1.0.0.0

.0.0.0.1.1.1.0.1.1.1.0.0.0

.1.1.1.0.0.1.0.1.0.0.1.1.1

.1.0.1.0.0.0.0.0.0.0.1.0.1

.0.0.1.1.0.0.0.0.0.1.1.0.0

.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.1.1.0.0.0.0.0.1.1.0.0

.1.0.1.0.0.0.0.0.0.0.1.0.1

.1.1.1.0.0.1.0.1.0.0.1.1.1

.0.0.0.1.1.1.0.1.1.1.0.0.0

.0.0.0.1.0.0.0.0.0.1.0.0.0

.0.0.0.1.1.0.0.0.1.1.0.0.0

CROSSREFS

Sequence in context: A228564 A075684 A146876 * A146852 A146237 A282501

Adjacent sequences: A147203 A147204 A147205 * A147207 A147208 A147209

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified December 7 10:26 EST 2022. Contains 358656 sequences. (Running on oeis4.)