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Search: id:A146599
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| A146599 |
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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 1000-1000-1111 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, 7, 7, 19, 19, 51, 51, 237, 237, 1335, 1335, 8829
(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
.1.0.0.0.1.0.1.0.0.0.1
.1.0.0.0.1.0.1.0.0.0.1
.1.1.1.1.0.0.0.1.1.1.1
.0.0.0.0.0.0.0.0.0.0.0
.1.1.1.1.0.0.0.1.1.1.1
.1.0.0.0.1.0.1.0.0.0.1
.1.0.0.0.1.0.1.0.0.0.1
.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: A146655 A146812 A147236 this_sequence A107222 A050613 A145940
Adjacent sequences: A146596 A146597 A146598 this_sequence A146600 A146601 A146602
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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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