# A009819 (b-file synthesized from sequence entry)
0 0
1 2
2 16
3 32
4 -18944
5 -2146048
6 -147605504
7 12359002112
8 9374161371136
9 2762835317030912
10 343159496128331776
11 -231213975915368808448
12 -236417180330506147856384
13 -118337919812286157284179968