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A146405
Number of n X n binary arrays with all ones connected only in a 1000-1111-0100 pattern in any orientation.
0
1, 1, 1, 17, 53, 413, 6475, 139711, 4765521, 251545591, 21612521501, 2948268913163
OFFSET
1,4
EXAMPLE
Maximal 8 X 8 example
.0.1.1.0.1.1.0.0
.1.1.0.1.1.0.1.0
.0.1.0.0.1.0.1.0
.0.1.0.0.1.0.1.1
.1.0.0.0.0.1.1.0
.1.1.1.1.0.0.0.1
.0.1.0.0.1.1.1.1
.0.0.0.0.0.0.1.0
CROSSREFS
Sequence in context: A146847 A146714 A146397 * A228244 A158968 A072895
KEYWORD
nonn
AUTHOR
STATUS
approved