# A336742 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 1
4 2
5 6
6 17
7 49
8 156
9 520
10 1762
11 6110
12 21713
13 78469
14 287393
15 1065951
16 3998286
17 15140500
18 57817817
19 222478829
20 861952579
21 3360043843
22 13171307962