# A081046 (b-file synthesized from sequence entry) 0 1 1 -2 2 5 3 -17 4 74 5 -394 6 2484 7 -18108 8 149904 9 -1389456 10 14257440 11 -160460640 12 1965444480 13 -26029779840 14 370643938560 15 -5646837369600 16 91657072281600 17 -1579093018675200 18 28779361764249600 19 -553210247226470400