# A301831 (b-file synthesized from sequence entry)
0 1
1 -1
2 0
3 0
4 6
5 -16
6 16
7 -34
8 217
9 -681
10 1343
11 -3466
12 13370
13 -42380
14 109477
15 -312448
16 1040248
17 -3267138
18 9447529
19 -28367596
20 90504001
21 -283611105
22 861087913
23 -2654231074
24 8386506600
25 -26359974392
26 81902319183
27 -256179313766
28 809890745232
29 -2557697524240
30 8046530976599