# A130412 (b-file synthesized from sequence entry)
1 2
2 5
3 140
4 105
5 2310
6 15015
7 120120
8 85085
9 9699690
10 4849845
11 446185740
12 557732175
13 3346393050
14 48522699225
15 24067258815600
16 1504203675975
17 3008407351950
18 55655536011075
19 222622144044300
20 2281876976454075