[1,2,5,17,74,394,2484,18108,149904,1389456, 14257440,160460640,1965444480,26029779840, 370643938560,5646837369600,91657072281600, 1579093018675200,28779361764249600, 553210247226470400,11185850044938240000, 237335752951879680000]