# A012591 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 0
4 -24
5 -140
6 -200
7 5096
8 63616
9 282192
10 -3220832
11 -80931136
12 -710613376
13 3394272960
14 211897855104
15 3116854010752
16 2173449924608
17 -951933369204480
18 -22125765748465152
19 -140624117764880384