# A020030 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 12
5 58
6 333
7 2233
8 17225
9 150104
10 1458150
11 15623032
12 183012659
13 2326875239
14 31911431853
15 469553925838
16 7378704548888
17 123329776031415
18 2184698889699346
19 40885079221516335
20 806020133224179176