# A357222 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 15
4 73
5 391
6 2180
7 12620
8 75056
9 456004
10 2817879
11 17656517
12 111919061
13 716379379
14 4623944175
15 30062540989
16 196692237527
17 1294112710358
18 8556766562091
19 56829292404053
20 378936456243142
21 2535866861527016
22 17025875430611442
23 114654511539186113