# A200475 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 13
4 65
5 350
6 1981
7 11627
8 70132
9 432090
10 2707595
11 17202779
12 110563543
13 717547090
14 4695774335
15 30952628861
16 205318395288
17 1369539030021
18 9180527051187
19 61813112864984
20 417850301293691
21 2834802846097200
22 19294989810689802
23 131723105933867817
24 901709774424393614