A146446 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.

1, 1, 1, 1, 1, 1, 11, 17, 249, 505, 5595, 13277, 255723, 714985, 48904687, 172919585, 23239333565, 103253283519, 18873899120725, 102743668838719, 32633484992496285, 217183989203759529, 151537474245121050379