66555378453domain: NAppears in sequencesHalf the number of (n+2) X 5 binary arrays with each 3 X 3 subblock having sum 3, 4, 5 or 6.at n=5A187311Half the number of (n+2)X8 binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6.at n=2A187314