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A147329
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 00100-00100-11111-00100 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 8, 13, 22, 33, 80, 189, 739, 1949, 6380, 15828, 56294, 190233, 1028070, 4302870, 24217353, 101984675
OFFSET
1,9
EXAMPLE
Maximal 9 X 9 example
.0.0.0.0.1.0.0.0.0
.0.0.1.1.1.1.1.0.0
.0.1.0.0.1.0.0.1.0
.0.1.0.0.1.0.0.1.0
.1.1.1.1.0.1.1.1.1
.0.1.0.0.1.0.0.1.0
.0.1.0.0.1.0.0.1.0
.0.0.1.1.1.1.1.0.0
.0.0.0.0.1.0.0.0.0
CROSSREFS
Sequence in context: A102315 A376534 A142880 * A175148 A147417 A147357
KEYWORD
nonn
AUTHOR
STATUS
approved