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A145964
Number of n X n binary arrays with all ones connected only in a one by five or five by one block.
0
1, 1, 1, 1, 25, 173, 1794, 20685, 319727, 6676539, 232552310, 11372993795
OFFSET
1,5
EXAMPLE
Maximal 8 X 8 example
.0.0.0.1.1.1.1.1
.1.0.1.0.0.0.0.0
.1.0.1.0.0.1.0.0
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.0.0.0.0.0.1.0.1
.1.1.1.1.1.0.0.1
CROSSREFS
Sequence in context: A120096 A115330 A213546 * A020250 A201089 A020277
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 25 2008
STATUS
approved