# A009178 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 -3
4 19
5 -90
6 556
7 -3885
8 31109
9 -279972
10 2799766
11 -30797415
12 369569047
13 -4804397598
14 67261566464
15 -1008923496945
16 16142775951241
17 -274427191171080
18 4939689441079594
19 -93854099380512267
20 1877081987610245531