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A147194
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 63, 109, 781, 1575, 12401, 27045, 346129, 858707, 43136869, 130994019, 11875535419, 43413437829, 3832077399895, 16507726912431, 1910337965009389, 9542878365158887, 2142686650051542137
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,9
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EXAMPLE
| Maximal 9 X 9 example
.1.0.0.0.0.0.0.0.1
.1.1.1.0.0.0.1.1.1
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
.0.0.0.0.0.0.0.0.0
.1.0.0.0.0.0.0.0.1
.1.1.1.0.0.0.1.1.1
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
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CROSSREFS
| Sequence in context: A039480 A023688 A118157 * A147398 A166394 A038839
Adjacent sequences: A147191 A147192 A147193 * A147195 A147196 A147197
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KEYWORD
| nonn
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AUTHOR
| R. H. Hardin (rhhardin(AT)att.net), Nov 04 2008
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