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A147004
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-11111-00100 pattern in any orientation.
0
1, 1, 1, 1, 5, 1, 13, 5, 80, 15, 1622, 239, 39282, 4131, 1538621, 99155, 127226887, 5960881, 16725872953, 549694386, 3916428224133
OFFSET
1,5
EXAMPLE
Maximal 8 X 8 example
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.1.0.0.0.0.1.0
.0.1.0.0.0.0.1.0
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
.0.1.0.0.0.0.1.0
CROSSREFS
Sequence in context: A081224 A104793 A243883 * A319664 A205961 A146620
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved