# A052755 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 15
4 79
5 466
6 2872
7 18409
8 121197
9 815491
10 5581214
11 38737651
12 272012178
13 1928939678
14 13794498614
15 99371002295
16 720411445866
17 5252194141946
18 38482834469488
19 283223825607253
20 2092829973445703