login
A147255
Number of n X n binary arrays with all ones connected only in a 0001-1101-0111 pattern in any orientation.
0
1, 1, 1, 17, 53, 273, 3001, 57769, 1501233, 44477633, 2219720427, 183391587053, 21595528376763
OFFSET
1,4
EXAMPLE
Maximal 8 X 8 example
.0.0.0.0.1.1.1.0
.0.0.0.0.1.0.1.1
.0.0.0.0.1.0.0.0
.0.0.0.0.0.1.1.1
.1.1.1.0.1.0.0.1
.1.0.0.1.1.0.1.1
.1.1.0.1.0.0.1.0
.0.1.0.1.1.1.0.0
CROSSREFS
Sequence in context: A224269 A125637 A320897 * A146737 A146839 A147178
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved