# A013232 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 3
5 -10
6 100
7 -525
8 5985
9 -45540
10 591750
11 -5890775
12 86674775
13 -1066113750
14 17624076600
15 -257870101125
16 4747675466625
17 -80439982441000
18 1635873200172250
19 -31462999921825875
20 701530665349044375