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Search: id:A147510
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A147510 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 11110-01111 pattern in any orientation. +0
1
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 9, 9, 23, 23, 81, 81, 267, 267, 1053, 1053, 6173, 6173 (list; graph; listen)
OFFSET

1,13

EXAMPLE

Maximal 13 X 13 example

.0.0.0.0.1.0.0.0.1.0.0.0.0

.0.0.0.0.1.1.0.1.1.0.0.0.0

.0.0.0.0.1.1.0.1.1.0.0.0.0

.0.0.0.0.1.1.0.1.1.0.0.0.0

.1.1.1.1.0.1.0.1.0.1.1.1.1

.0.1.1.1.1.0.0.0.1.1.1.1.0

.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.1.1.1.1.0.0.0.1.1.1.1.0

.1.1.1.1.0.1.0.1.0.1.1.1.1

.0.0.0.0.1.1.0.1.1.0.0.0.0

.0.0.0.0.1.1.0.1.1.0.0.0.0

.0.0.0.0.1.1.0.1.1.0.0.0.0

.0.0.0.0.1.0.0.0.1.0.0.0.0

CROSSREFS

Adjacent sequences: A147507 A147508 A147509 this_sequence A147511 A147512 A147513

Sequence in context: A146820 A146663 A146394 this_sequence A146474 A145957 A128019

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net)

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.


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