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Search: id:A146176
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| A146176 |
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Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-100-111 pattern in any orientation. |
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+0
1
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| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 13, 13, 31, 31, 79, 79, 513, 513, 4397, 4397, 30071, 30071
(list; graph; listen)
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OFFSET
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1,11
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EXAMPLE
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Maximal 11 X 11 example
.0.0.1.1.1.0.1.1.1.0.0
.0.0.0.0.1.0.1.0.0.0.0
.1.0.0.1.1.0.1.1.0.0.1
.1.0.1.0.0.0.0.0.1.0.1
.1.1.1.0.0.0.0.0.1.1.1
.0.0.0.0.0.0.0.0.0.0.0
.1.1.1.0.0.0.0.0.1.1.1
.1.0.1.0.0.0.0.0.1.0.1
.1.0.0.1.1.0.1.1.0.0.1
.0.0.0.0.1.0.1.0.0.0.0
.0.0.1.1.1.0.1.1.1.0.0
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CROSSREFS
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Sequence in context: A141245 A147032 A146261 this_sequence A147136 A146844 A146193
Adjacent sequences: A146173 A146174 A146175 this_sequence A146177 A146178 A146179
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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), Oct 27 2008
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