[1,1,2,6,24,96,576,3312,21456,152784,1237536, 9984096,133494912,1412107776,16369357824, 206123325696,2866280276736,36809077162752, 592066290710016,8800038127378944, 136876273991755776,2197453620220010496, 37915306084793106432]