# A326481 (b-file synthesized from sequence entry)
0 1
1 -2
2 2
3 4
4 -16
5 -32
6 272
7 544
8 -7936
9 -15872
10 353792
11 707584
12 -22368256
13 -44736512
14 1903757312
15 3807514624
16 -209865342976
17 -419730685952
18 29088885112832
19 58177770225664
20 -4951498053124096
21 -9902996106248192
22 1015423886506852352