# A371987 (b-file synthesized from sequence entry)
0 1
1 6
2 -18
3 90
4 -486
5 2430
6 -8586
7 -17982
8 841266
9 -12165066
10 136875582
11 -1348875990
12 12016318410
13 -96794708562
14 685263211974
15 -3870181566702
16 10180063779426
17 147487856352102
18 -3442575733736562
19 47851939835741178
20 -546779680526987910
21 5515345957243519710