# A032004 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 7
5 15
6 105
7 855
8 7855
9 55975
10 560065
11 8413815
12 92433795
13 1445733485
14 21748130145
15 378156976785
16 6718626421035
17 128657800331555
18 2540367695055365
19 57535394030907155
20 1264457062012294015