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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified April 17 20:11 EDT 2024. Contains 371767 sequences. (Running on oeis4.)