A146242 Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 110-111-010 pattern in any orientation.

1, 1, 1, 1, 1, 1, 5, 5, 17, 17, 55, 55, 445, 445, 7601, 7601, 166611, 166611, 5058693, 5058693, 255201297, 255201297, 21434365863, 21434365863, 2739845770351, 2739845770351, 552080325938657, 552080325938657, 172381380433171337