# A372002 (b-file synthesized from sequence entry)
0 1
1 2
2 0
3 4
4 -8
5 24
6 -72
7 224
8 -720
9 2368
10 -7936
11 27008
12 -93088
13 324288
14 -1140032
15 4039296
16 -14409728
17 51713792
18 -186577152
19 676334592
20 -2462090752
21 8997154816
22 -32992079872
23 121362092032
24 -447721572864
25 1656081763328
26 -6140640246784
27 22820403312640