login
A147319
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-00100-00100-11111 pattern in any orientation.
0
1, 1, 1, 1, 5, 1, 9, 1, 50, 19, 1045, 405, 26459, 5465, 942760, 98073, 47165993, 3767543, 4686396466, 402496574, 955119646127, 74080050007, 337888010503075, 18773415116111
OFFSET
1,5
EXAMPLE
Maximal 9 X 9 example
.1.0.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.0.1
.1.1.1.1.0.1.1.1.1
.1.0.0.0.0.0.0.0.1
.1.0.0.1.0.1.0.0.1
.0.0.0.1.0.1.0.0.0
.1.1.1.1.0.1.1.1.1
.0.0.0.1.0.1.0.0.0
.0.0.0.1.0.1.0.0.0
CROSSREFS
Sequence in context: A348980 A046580 A050358 * A147326 A336048 A143114
KEYWORD
nonn
AUTHOR
STATUS
approved