# A091139 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 16
5 66
6 346
7 2229
8 17000
9 148898
10 1465364
11 15957314
12 190158712
13 2459041744
14 34278016954
15 512253587397
16 8168812190472
17 138450960309882