# A355671 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 0
4 12
5 60
6 570
7 8190
8 134456
9 2408616
10 49307670
11 1159112130
12 30619757652
13 891045909468
14 28244653953698
15 969331283419590
16 35858099428919280
17 1423688804991442896
18 60402176709135347502
19 2726896792761748601226
20 130498364319404393167820