# A132839 (b-file synthesized from sequence entry)
0 1
1 5
2 25
3 125
4 625
5 3121
6 15605
7 78025
8 390125
9 1950625
10 9753123
11 48765615
12 243828075
13 1219140375
14 6095701875
15 30478509371
16 152392546855
17 761962734275
18 3809813671375
19 19049068356875
20 95245341784374
21 476226708921870