# A009796 (b-file synthesized from sequence entry)
0 0
1 2
2 -4
3 198
4 -4488
5 365834
6 -26333836
7 3548101326
8 -521011775760
9 109600356362258
10 -26637313430995732
11 8227982193974569686
12 -2954555247298219357848
13 1270556471466981784144154