# A185054 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 35
5 226
6 1780
7 16489
8 175191
9 2095995
10 27844858
11 406243180
12 6451271440
13 110696475526
14 2039751769020
15 40151423775525
16 840515332739587
17 18638310752208047
18 436301221978291734
19 10748794565787775575
20 277935932581614865791
21 7524554625329583923280