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A146180
Number of n X n binary arrays with all ones connected only in a 110-111-100 pattern in any orientation.
0
1, 1, 9, 33, 113, 1711, 59971, 1694043, 74822217, 7821008273, 1319866139817, 301739131956013, 120737110736027887
OFFSET
1,3
EXAMPLE
Maximal 8 X 8 example
.0.0.0.1.1.1.0.0
.1.1.1.0.1.1.0.0
.1.1.0.0.1.0.1.1
.0.1.0.0.0.1.1.1
.0.0.1.1.1.0.0.1
.0.1.0.1.1.0.1.0
.1.1.0.1.0.0.1.1
.1.1.1.0.0.1.1.1
CROSSREFS
Sequence in context: A197359 A147155 A146232 * A221447 A147147 A147154
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 27 2008
STATUS
approved