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A145965
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a one by five or five by one block.
0
1, 1, 1, 1, 17, 5, 96, 29, 1419, 169, 48156, 8811, 3676473, 492443, 567795363, 62520266, 184305203904, 12468804407, 98912284885392, 5057793701769
OFFSET
1,5
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
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
CROSSREFS
Sequence in context: A298631 A338559 A243933 * A040276 A166211 A086763
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 25 2008
STATUS
approved