# A009317 (b-file synthesized from sequence entry)
0 0
1 1
2 -2
3 4
4 -23
5 183
6 -1459
7 13592
8 -153348
9 1975117
10 -28287606
11 449154660
12 -7849907559
13 149555531331
14 -3083839320171
15 68448665226744
16 -1627353764342224
17 41258541219292569
18 -1111163801421888834