# A052436 (b-file synthesized from sequence entry)
1 0
2 0
3 1
4 3
5 3
6 9
7 13
8 52
9 140
10 501
11 1763
12 6785
13 25571
14 99907
15 392230
16 1564989
17 6297892
18 25601641
19 104846143
20 432629580