# A361596 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 15
4 99
5 795
6 7485
7 80745
8 981225
9 13253625
10 196834995
11 3185662095
12 55770765435
13 1049572599075
14 21120725230605
15 452384160453225
16 10272547048388625
17 246434674107647025
18 6226347228582355875
19 165224032352989584975
20 4593512876411509125075