# A189847 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 696
7 4572
8 34260
9 290328
10 2751480
11 28426056
12 318900264
13 3874868280
14 50813711808
15 716309557440
16 10721493269568