# A097168 (b-file synthesized from sequence entry)
0 1
1 13
2 151
3 1693
4 18571
5 200473
6 2137591
7 22571653
8 236478211
9 2461637233
10 25488068431
11 262725949213
12 2697866876251
13 27614135219593
14 281860550309671
15 2870078286120373
16 29164037908416691
17 295809674509083553