# A193127 (b-file synthesized from sequence entry)
1 2
2 36
3 384
4 3528
5 30250
6 248832
7 1989806
8 15586704
9 120187008
10 915304500
11 6900949462
12 51599794176
13 383142771674
14 2828107288188
15 20768716848000
16 151840963183392
17 1105779284582146
18 8024954790380544
19 58059628319357318
20 418891171182561000