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A147058
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1101-0111 pattern in any orientation.
0
1, 1, 1, 1, 1, 17, 47, 213, 1235, 4969, 37883, 407179, 4619435, 65431997, 1207923913, 24951197669, 667166329171
OFFSET
1,6
EXAMPLE
Maximal 8 X 8 example
.0.1.1.0.0.0.1.1
.0.1.0.0.0.0.0.1
.0.1.1.1.0.1.1.1
.0.0.1.0.0.0.1.0
.0.1.0.0.0.1.0.0
.1.1.1.0.1.1.1.0
.1.0.0.0.0.0.1.0
.1.1.0.0.0.1.1.0
CROSSREFS
Sequence in context: A220081 A229448 A155841 * A083296 A362480 A159850
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved