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A147493
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 11101-10111 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 9, 15, 23, 35, 101
OFFSET
1,9
EXAMPLE
Maximal 9 X 9 example
.0.0.1.0.1.1.1.0.0
.0.0.1.1.1.0.1.0.0
.1.1.0.0.0.0.0.1.1
.0.1.0.0.0.0.0.0.1
.1.1.0.0.0.0.0.1.1
.1.0.0.0.0.0.0.1.0
.1.1.0.0.0.0.0.1.1
.0.0.1.0.1.1.1.0.0
.0.0.1.1.1.0.1.0.0
CROSSREFS
Sequence in context: A118403 A027688 A033498 * A178961 A147509 A057259
KEYWORD
nonn
AUTHOR
STATUS
approved