# A097949 (b-file synthesized from sequence entry)
0 -2
1 1
2 -4
3 9
4 -34
5 121
6 -452
7 1681
8 -6274
9 23409
10 -87364
11 326041
12 -1216802
13 4541161
14 -16947844
15 63250209
16 -236052994
17 880961761
18 -3287794052
19 12270214441
20 -45793063714
21 170902040409
22 -637815097924
23 2380358351281
24 -8883618307202
25 33154114877521
26 -123732841202884