# A213232 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 28
4 215
5 1983
6 19789
7 213698
8 2426851
9 28661509
10 348287354
11 4322627557
12 54508747790
13 695534616050
14 8953637420349
15 116002300640637
16 1509724588732027
17 19707310304585212
18 257698683361191598
19 3372154116182404890
20 44121356408759264549