251988905domain: NAppears in sequencesNumber of (n+1)X3 0..5 arrays with the permanents of all 2X2 subblocks equal and nonzero.at n=6A204757Number of (n+1) X 8 0..5 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.at n=1A204762