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A146909
Number of n X n binary arrays with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.
0
1, 1, 1, 3, 9, 21, 85, 553, 5197, 59067, 895397, 19192871, 570897325, 23035046469, 1263961153269, 94815577724879, 9730236725590873, 1365210979058853347
OFFSET
1,4
EXAMPLE
Maximal 8 X 8 example
.0.0.0.0.0.1.0.0
.0.0.1.0.1.1.1.0
.0.1.1.1.0.1.1.1
.0.0.1.1.1.0.1.0
.0.1.0.1.0.1.0.0
.1.1.1.0.1.1.1.0
.0.1.1.1.0.1.1.1
.0.0.1.0.0.0.1.0
CROSSREFS
Sequence in context: A118932 A053499 A218003 * A146248 A074000 A067645
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved