login
A146382
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-1111 pattern in any orientation.
0
1, 1, 1, 7, 5, 40, 19, 418, 491, 27240, 24451, 2971576, 2078908, 614382155, 474528877, 322682051335, 262749927910, 400764203886592, 313224621598547, 1137774558755597994, 881352408772896894, 7433275932107389413579
OFFSET
1,4
EXAMPLE
Maximal 8 X 8 example
.1.0.1.1.1.1.0.1
.1.1.0.1.1.0.1.1
.1.1.0.0.0.0.1.1
.1.0.1.1.1.1.0.1
.0.1.0.1.1.0.1.0
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
.0.1.0.0.0.0.1.0
CROSSREFS
Sequence in context: A070426 A341431 A142883 * A376083 A163742 A202130
KEYWORD
nonn
AUTHOR
STATUS
approved