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A146393
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1000-1100-0111 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 3, 9, 19, 43, 141, 419, 1255, 5087, 24913, 131971, 734375, 4818949, 34664741, 269727721, 2371934855, 24159321229, 274622983853
OFFSET
1,8
EXAMPLE
Maximal 8 X 8 example
.0.1.1.1.0.0.0.0
.1.0.0.1.1.0.0.0
.1.0.0.0.1.0.0.0
.1.1.0.0.0.1.1.0
.0.1.1.0.0.0.1.1
.0.0.0.1.0.0.0.1
.0.0.0.1.1.0.0.1
.0.0.0.0.1.1.1.0
CROSSREFS
Sequence in context: A147371 A075188 A051894 * A147431 A329145 A348377
KEYWORD
nonn
AUTHOR
STATUS
approved