# A140440 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 1
6 1
7 2
8 5
9 12
10 40
11 154
12 766
13 4672
14 34547
15 302185
16 3073267
17 35933851
18 479768761
19 7284446498
20 125435333136