# A027104 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 25
4 93
5 357
6 1373
7 5188
8 19456
9 72373
10 267137
11 979762
12 3573058
13 12965292
14 46839228
15 168552205
16 604420933
17 2160638253
18 7701879217
19 27384190634
20 97138835970
21 343846037094
22 1214761031998
23 4283924048755