# A097167 (b-file synthesized from sequence entry)
0 1
1 12
2 138
3 1542
4 16878
5 181902
6 1937118
7 20434062
8 213906558
9 2225159022
10 23026431198
11 237237880782
12 2435140927038
13 24916268343342
14 254246415090078
15 2588217735810702
16 26293959622296318
17 266645636600666862