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Search: id:A147152
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A147152 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation. +0
1
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 15, 15, 33, 33, 101, 101, 729, 729, 5159 (list; graph; listen)
OFFSET

1,13

EXAMPLE

Maximal 13 X 13 example

.0.0.0.1.0.0.0.0.0.1.0.0.0

.0.0.1.1.0.0.0.0.0.1.1.0.0

.0.1.0.1.1.0.0.0.1.1.0.1.0

.1.1.1.0.1.1.0.1.1.0.1.1.1

.0.0.1.1.0.0.0.0.0.1.1.0.0

.0.0.0.1.0.0.0.0.0.1.0.0.0

.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.1.0.0.0.0.0.1.0.0.0

.0.0.1.1.0.0.0.0.0.1.1.0.0

.1.1.1.0.1.1.0.1.1.0.1.1.1

.0.1.0.1.1.0.0.0.1.1.0.1.0

.0.0.1.1.0.0.0.0.0.1.1.0.0

.0.0.0.1.0.0.0.0.0.1.0.0.0

CROSSREFS

Sequence in context: A061200 A050350 A147266 this_sequence A104551 A100746 A050341

Adjacent sequences: A147149 A147150 A147151 this_sequence A147153 A147154 A147155

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Nov 04 2008

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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