# A009787 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 -3
4 12
5 35
6 -435
7 -161
8 23968
9 -68811
10 -1874205
11 15189361
12 177102156
13 -3209424153
14 -15134777567
15 750725838563
16 -828777844320
17 -197682938738071
18 1577204564247783
19 55820827940141285
20 -1005440186803008980