67916249domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+1) X 4 0..3 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.at n=6A204871Number of (n+1) X 8 0..3 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.at n=2A204875Prime numbersat n=4002690