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A146831
Number of n X n binary arrays with all ones connected only in a 1001-1111-0100 pattern in any orientation.
0
1, 1, 1, 17, 49, 317, 3643, 63437, 1864637, 68228177, 3719926503, 324717444923, 42997787423811
OFFSET
1,4
EXAMPLE
Maximal 8 X 8 example
.1.0.0.1.0.0.0.0
.1.1.1.1.0.1.1.0
.0.1.0.0.0.0.1.0
.0.0.0.0.0.0.1.1
.1.1.0.0.0.1.1.0
.0.1.1.0.1.0.0.0
.0.1.0.1.1.1.1.0
.1.1.0.1.0.0.1.0
CROSSREFS
Sequence in context: A146586 A146626 A146634 * A146698 A146706 A120612
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved