# A007296 (b-file synthesized from sequence entry)
1 1
2 -2
3 5
4 -15
5 52
6 -200
7 827
8 -3596
9 16191
10 -74702
11 350794
12 -1669439
13 8029728
14 -38963552
15 190499461
16 -937550897
17 4641253152
18 -23096403422
19 115475977145
20 -579799302750
21 2922325238788
22 -14780595276064
23 74995317703482
24 -381625745964018
25 1947147485751919