# A113844 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 2
5 6
6 18
7 78
8 312
9 2070
10 12420
11 163878
12 1966536
13 62213526
14 1866405780
15 206591803854
16 22311914816232
17 9436063264020024
18 3963146570888410080
19 9887814229774042889370
20 24620657432137366794531300