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A146925 Number of n X n binary arrays with all ones connected only in a 1001-1111-1001 pattern in any orientation. 0
1, 1, 1, 5, 13, 37, 117, 629, 5685, 56354, 602084, 7772959, 142197171, 3619248864, 116780772318, 4548516587793, 219091485187390 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
EXAMPLE
Maximal 8 X 8 example
.1.1.1.0.1.0.0.1
.0.1.0.0.1.1.1.1
.0.1.0.0.1.0.0.1
.1.1.1.0.0.0.0.0
.0.0.0.0.0.1.1.1
.1.0.0.1.0.0.1.0
.1.1.1.1.0.0.1.0
.1.0.0.1.0.1.1.1
CROSSREFS
Sequence in context: A071100 A199108 A125734 * A146452 A146062 A201612
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified October 1 17:40 EDT 2023. Contains 365828 sequences. (Running on oeis4.)