# A086349 (b-file synthesized from sequence entry)
0 1
1 9
2 40
3 200
4 952
5 4624
6 22272
7 107648
8 519552
9 2509056
10 12113920
11 58492928
12 282425344
13 1363677184
14 6584401920
15 31792332800
16 153506906112
17 741197021184
18 3578815578112
19 17280050659328
20 83435464425472