# A177699 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 -3
4 12
5 -40
6 190
7 -1071
8 7224
9 -56232
10 495898
11 -4880755
12 53005700
13 -629398848
14 8110146070
15 -112690225935
16 1679413757168
17 -26719024870576
18 451969255722162
19 -8099650628337987
20 153288815339260796