# A145760 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 3
5 8
6 27
7 96
8 569
9 4093
10 37611
11 421080
12 6366190
13 123605120
14 3088656877
15 98116765714
16 4039581343182
17 214357411746908
18 14651947137883915
19 1285925403332066988
20 145385760960996273023
21 21168918836708595100735