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Search: id:A146458
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| A146458 |
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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 1100-0111-0010 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, 11, 11, 31, 31, 113, 113, 699, 699, 5221, 5221, 45431, 45431, 522967
(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
.0.0.0.1.0.0.0.1.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
.0.1.0.1.1.0.1.1.0.1.0
.1.1.1.0.1.0.1.0.1.1.1
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.0.0.0.0.0.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
.1.1.1.0.1.0.1.0.1.1.1
.0.1.0.1.1.0.1.1.0.1.0
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.1.0.0.0.1.0.0.0
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CROSSREFS
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Sequence in context: A147159 A146828 A146583 this_sequence A122573 A136123 A045495
Adjacent sequences: A146455 A146456 A146457 this_sequence A146459 A146460 A146461
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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)
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