[1,1,4,18,168,1560,20880,267120,5080320,93623040, 2184537600,49896000000,1451853849600, 41739720422400,1426847092070400,47989033956864000, 1919268439216128000,76229151152394240000, 3471527082588364800000,156226856133456396288000]