# A009618 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 -2
4 12
5 -59
6 300
7 -1700
8 10808
9 -76835
10 604440
11 -5201734
12 48397140
13 -480836407
14 5029687572
15 -54376704304
16 590140657200
17 -6060696430375
18 49142463616368
19 25189857279350
20 -16700280706496420
21 638685917560435181