# A047129 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 28
4 166
5 971
6 5937
7 36736
8 230363
9 1458037
10 9292357
11 59576614
12 383721187
13 2481397399
14 16099317872
15 104753149406
16 683279530195
17 4466548322041
18 29253296829696
19 191917744224242
20 1260998821726319
21 8296736705457073