# A165266 (b-file synthesized from sequence entry)
0 1
1 12
2 132
3 1452
4 15972
5 175692
6 1932612
7 21258732
8 233846052
9 2572306506
10 28295370840
11 311249071320
12 3423739697400
13 37661135713080
14 414272482302360
15 4556997189369240
16 50126967807537720
17 551396631852151800