# A321737 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 37
5 152
6 780
7 3965
8 23460
9 141471
10 944217
11 6445643
12 48075092
13 364921557
14 2974423953
15 24847873439
16 219611194148
17 1987556951714
18 18930298888792
19 184244039718755
20 1874490999743203
21 19510832177784098
22 210941659716920257
23 2331530519337226199
24 26692555830628617358