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A147044
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1100-0111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 57, 101, 713, 1409, 16209, 36805, 1045937, 2912737, 187227785, 638780181, 63010306161, 259616518697, 40933920799465, 203480267447389, 59661340540245489, 359399633370402801, 191689597051107880169
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,9
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EXAMPLE
| Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
.1.1.1.0.0.0.1.1.1
.0.1.0.0.0.0.0.1.0
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
.1.1.1.0.0.0.1.1.1
.0.1.0.0.0.0.0.1.0
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CROSSREFS
| Sequence in context: A111320 A147468 A147036 * A039535 A037990 A044244
Adjacent sequences: A147041 A147042 A147043 * A147045 A147046 A147047
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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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