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Search: id:A146394
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| A146394 |
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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 1000-1100-0111 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, 9, 9, 23, 23, 77, 77, 415, 415, 2809, 2809, 21039, 21039
(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
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.1.1.0.1.1.0.0.0
.1.0.0.0.1.0.1.0.0.0.1
.1.1.0.0.1.0.1.0.0.1.1
.0.1.1.1.0.0.0.1.1.1.0
.0.0.0.0.0.0.0.0.0.0.0
.0.1.1.1.0.0.0.1.1.1.0
.1.1.0.0.1.0.1.0.0.1.1
.1.0.0.0.1.0.1.0.0.0.1
.0.0.0.1.1.0.1.1.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
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CROSSREFS
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Sequence in context: A147214 A146820 A146663 this_sequence A147510 A146474 A145957
Adjacent sequences: A146391 A146392 A146393 this_sequence A146395 A146396 A146397
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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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