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A147001
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 00100-00100-11111 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 4, 5, 13, 19, 43, 57, 239, 521, 2347, 5442, 24758, 63173, 355006, 1139569, 7776109, 29105899, 223723640, 955226817, 8533424348
OFFSET
1,7
EXAMPLE
Maximal 8 X 8 example
.0.0.1.1.1.1.1.0
.1.0.0.0.1.0.0.0
.1.0.0.0.1.0.0.1
.1.1.1.0.0.0.0.1
.1.0.0.0.0.1.1.1
.1.0.0.1.0.0.0.1
.0.0.0.1.0.0.0.1
.0.1.1.1.1.1.0.0
CROSSREFS
Sequence in context: A258281 A094029 A005672 * A247325 A140683 A304599
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved