# A191998 (b-file synthesized from sequence entry)
1 1
2 3
3 9
4 21
5 231
6 847
7 2541
8 16093
9 33649
10 43263
11 447051
12 1043119
13 13560547
14 83300503
15 170222767
16 222599003
17 13133341177
18 774867129443
19 4719645242971
20 335094812250941