# A059713 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 19
5 63
6 214
7 738
8 2571
9 9020
10 31806
11 112572
12 399548
13 1421145
14 5063254
15 18062902
16 64505148
17 230547424
18 824547052
19 2950565215
20 10562978104