# A013211 (b-file synthesized from sequence entry)
0 0
1 0
2 -1
3 3
4 -6
5 23
6 -135
7 1036
8 -8820
9 79253
10 -790965
11 9009946
12 -115646454
13 1626322631
14 -24603654075
15 399276204328
16 -6962632196520
17 130208290075961
18 -2596473574347177
19 54889573679035678