# A180500 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 4
9 13
10 1
11 5
12 48
13 626
14 6570
15 1
16 25
17 1329
18 86715
19 4822394
20 181403533