# A012926 (b-file synthesized from sequence entry)
0 0
1 2
2 -1
3 12
4 -30
5 518
6 -3135
7 64792
8 -691180
9 16502714
10 -261559125
11 7121210052
12 -151437029370
13 4664635385070
14 -124619795266603
15 4313193388041072
16 -138442144387249560
17 5347435223354818034
18 -199835788440955821417