# A128729 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 20
5 71
6 262
7 994
8 3852
9 15183
10 60686
11 245412
12 1002344
13 4129012
14 17135432
15 71575350
16 300690836
17 1269662127
18 5385593406
19 22938095326
20 98059308676
21 420610907183
22 1809690341366
23 7808145901068
24 33776362530776