# A013009 (b-file synthesized from sequence entry)
0 0
1 1
2 -3
3 10
4 -55
5 393
6 -3485
7 36923
8 -455306
9 6408445
10 -101402557
11 1782112451
12 -34444583072
13 726178939315
14 -16584396680007
15 407872396640525
16 -10747394439586016
17 302068718096449161
18 -9020579413121532169