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Search: id:A147013
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| A147013 |
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 01000-11111-00010 pattern in any orientation. |
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+0
1
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| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 13, 57, 57, 273, 273, 2363, 2363, 27689, 27689, 439785, 439785, 10940975, 10940975, 360992565, 360992565
(list; graph; listen)
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OFFSET
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1,11
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EXAMPLE
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Maximal 11 X 11 example
.0.0.0.1.0.0.0.1.0.0.0
.0.0.0.1.1.0.1.1.0.0.0
.0.0.0.1.0.0.0.1.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.1.0.0.0.1.0.0.0
.0.0.0.0.0.0.0.0.0.0.0
.0.0.0.1.0.0.0.1.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.1.0.0.0.1.0.0.0
.0.0.0.1.1.0.1.1.0.0.0
.0.0.0.1.0.0.0.1.0.0.0
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CROSSREFS
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Sequence in context: A022347 A026907 A147249 this_sequence A147187 A147069 A146471
Adjacent sequences: A147010 A147011 A147012 this_sequence A147014 A147015 A147016
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Nov 04 2008
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