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Search: id:A146785
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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
1
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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; listen)
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OFFSET
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1,9
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EXAMPLE
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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
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Sequence in context: A147164 A146692 A146439 this_sequence A146572 A147211 A147241
Adjacent sequences: A146782 A146783 A146784 this_sequence A146786 A146787 A146788
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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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