# A107593 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 32
4 169
5 976
6 5989
7 38398
8 254509
9 1731596
10 12032874
11 85092944
12 610714311
13 4439136084
14 32626373027
15 242153129074
16 1813069499846
17 13682961621602
18 104014376985334
19 796004610604094
20 6129901459731357
21 47484532009772272