# A029889 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 14
4 43
5 140
6 476
7 1664
8 5939
9 21518
10 78876
11 291784
12 1087441
13 4077662
14 15369327
15 58184110
16 221104527
17 842990294
18 3223339023