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A146398
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1111-0010 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 17, 21, 669, 1435, 18879, 48783, 1539733, 4958749, 549583643, 2274430177, 407021932053, 2127553253975, 687811779125029, 4505491241008645, 2925616888695363409, 24054886221768029249
OFFSET
1,7
EXAMPLE
Maximal 8 X 8 example
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.1.1.0.0.0.0.1.1
.0.1.0.0.0.0.1.0
.0.1.1.0.0.1.1.0
.0.1.0.0.0.0.1.0
CROSSREFS
Sequence in context: A146715 A146848 A146611 * A146406 A066470 A054478
KEYWORD
nonn
AUTHOR
STATUS
approved