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Search: id:A147413
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A147413 Number of n X n binary arrays with all ones connected only in a 1001-1111-0110 pattern in any orientation. +0
1
1, 1, 1, 9, 25, 81, 559, 6336, 95947, 1549728, 36536673, 1325100728, 67670472497, 4585160114565, 421563951431911 (list; graph; listen)
OFFSET

1,4

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.0.1.1

.0.1.1.0.0.1.1.0

.1.1.0.0.0.1.1.0

.1.1.0.0.0.0.1.1

.0.1.1.0.1.1.0.0

.1.0.0.1.0.1.1.0

.1.1.1.1.0.1.1.0

.0.1.1.0.1.1.0.0

CROSSREFS

Sequence in context: A166103 A110970 A141583 this_sequence A066137 A147428 A147436

Adjacent sequences: A147410 A147411 A147412 this_sequence A147414 A147415 A147416

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net)

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Last modified December 5 17:24 EST 2009. Contains 170342 sequences.


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