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A147069 Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10000-11111-00001 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 13, 65, 65, 297, 297, 2247, 2247, 24427, 24427, 296303, 296303, 6915839, 6915839, 203810183, 203810183 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,11

LINKS

Table of n, a(n) for n=1..26.

EXAMPLE

Maximal 11 X 11 example

.1.1.0.0.0.0.0.0.0.1.1

.0.1.0.0.0.0.0.0.0.1.0

.0.1.0.0.0.0.0.0.0.1.0

.0.1.0.0.0.0.0.0.0.1.0

.0.1.1.0.0.0.0.0.1.1.0

.0.0.0.0.0.0.0.0.0.0.0

.0.1.1.0.0.0.0.0.1.1.0

.0.1.0.0.0.0.0.0.0.1.0

.0.1.0.0.0.0.0.0.0.1.0

.0.1.0.0.0.0.0.0.0.1.0

.1.1.0.0.0.0.0.0.0.1.1

CROSSREFS

Sequence in context: A302513 A147013 A147187 * A303312 A146471 A071612

Adjacent sequences:  A147066 A147067 A147068 * A147070 A147071 A147072

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified October 4 19:10 EDT 2022. Contains 357239 sequences. (Running on oeis4.)