# A060909 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 18
4 133
5 1236
6 13767
7 176674
8 2547561
9 40614408
10 708601771
11 13433957934
12 275200324797
13 6061423076476
14 142868492357151
15 3587417860571346
16 95560989416582353
17 2690066742390963216
18 79752454967110250835