# A013488 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 -1
4 9
5 -33
6 235
7 -1517
8 12593
9 -111465
10 1122819
11 -12313409
12 147949593
13 -1922353925
14 26918452691
15 -403744456541
16 6460109224801
17 -109820584161393
18 1976779056442179
19 -37558742545087481