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A146785
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0100-1100-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 57, 57, 369, 369, 5039, 5039, 105411, 105411, 2937697, 2937697, 116344821, 116344821
(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
.1.0.0.0.0.0.0.0.1
.1.1.1.0.0.0.1.1.1
.1.1.0.0.0.0.0.1.1
.0.0.0.0.0.0.0.0.0
.1.1.0.0.0.0.0.1.1
.1.1.1.0.0.0.1.1.1
.1.0.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.0.1
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CROSSREFS
| Sequence in context: A147164 A146692 A146439 * A146572 A147211 A147241
Adjacent sequences: A146782 A146783 A146784 * A146786 A146787 A146788
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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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