# A039929 (b-file synthesized from sequence entry)
1 0
2 1
3 9
4 59
5 450
6 4114
7 43512
8 528492
9 7235568
10 110499696
11 1862118720
12 34342356960
13 688092312960
14 14886351037440
15 345878769358080
16 8590707803462400
17 227153424885811200
18 6371121297516595200