# A113996 (b-file synthesized from sequence entry)
0 1
1 5
2 25
3 125
4 665
5 3825
6 23977
7 164105
8 1225225
9 9954981
10 87750065
11 836288501
12 8587255313
13 94679407585
14 1117195703729
15 14064269132049
16 188338637653329
17 2675444736963557
18 40212844609440521
19 637967091730240877