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A146934
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1111-1111 pattern in any orientation.
0
1, 1, 1, 5, 3, 15, 9, 102, 95, 2114, 1457, 60876, 28065, 3284271, 1326313, 274823476, 104019594, 40810011642, 14395862201, 12062032991695, 3759057255808, 6192269975577293, 1643495670333065, 5604084539368225288
OFFSET
1,4
EXAMPLE
Maximal 8 X 8 example
.0.0.1.1.1.1.0.0
.0.0.1.1.1.1.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1
CROSSREFS
Sequence in context: A070375 A166465 A162813 * A213762 A178067 A213548
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved