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A147192 Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11000-01110-00011 pattern in any orientation. 0
1, 1, 1, 1, 5, 9, 25, 39, 213, 729, 5371, 22321, 227621, 1304481, 19507517, 156958957 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,5
LINKS
EXAMPLE
Maximal 8 X 8 example
.0.0.1.0.0.0.1.1
.0.1.1.0.1.1.1.0
.0.1.0.1.1.0.0.0
.1.1.0.0.0.0.0.1
.1.0.0.0.0.0.1.1
.0.0.0.1.1.0.1.0
.0.1.1.1.0.1.1.0
.1.1.0.0.0.1.0.0
CROSSREFS
Sequence in context: A273827 A024825 A147074 * A259665 A284285 A025624
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified July 24 10:37 EDT 2024. Contains 374583 sequences. (Running on oeis4.)