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A147100
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1000-1100-0111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 67, 117, 1095, 2187, 29205, 68767, 1031073, 2764619, 85636311, 266613411, 21897961453, 82048784245, 8655557801397, 38233019016289, 6409762412312631, 33363306208522245, 7840172339778301363
(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
.0.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0.0
.0.1.1.1.0.1.1.1.0
.1.1.0.0.0.0.0.1.1
.1.0.0.1.0.1.0.0.1
.1.0.0.1.0.1.0.0.1
.0.0.1.1.0.1.1.0.0
.1.1.1.0.0.0.1.1.1
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CROSSREFS
| Sequence in context: A142193 A141889 A141925 * A144094 A044190 A044571
Adjacent sequences: A147097 A147098 A147099 * A147101 A147102 A147103
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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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