# A308536 (b-file synthesized from sequence entry)
0 1
1 -2
2 0
3 8
4 16
5 -64
6 -576
7 -1152
8 12800
9 136704
10 422912
11 -4464640
12 -72626176
13 -413966336
14 1805123584
15 64448004096
16 651340611584
17 1132294045696
18 -73000566390784
19 -1332193006190592
20 -10293724166750208
21 56984418960539648
22 3042980275005947904
23 46913652420264329216