332221domain: NPropertiesPrimalityPrimeyesAppears in sequencesEight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 - 2*x^2)/(1 - 4*x + x^2 + 2*x^3).at n=10A180144Prime numbers with monotonically decreasing digits, differing by at most 1.at n=26A378775Prime numbersat n=28586