# A084241 (b-file synthesized from sequence entry)
0 0
1 1
2 -5
3 21
4 -85
5 341
6 -1365
7 5461
8 -21845
9 87381
10 -349525
11 1398101
12 -5592405
13 22369621
14 -89478485
15 357913941
16 -1431655765
17 5726623061
18 -22906492245
19 91625968981
20 -366503875925
21 1466015503701
22 -5864062014805
23 23456248059221
24 -93824992236885