# A081105 (b-file synthesized from sequence entry)
0 1
1 6
2 35
3 200
4 1125
5 6250
6 34375
7 187500
8 1015625
9 5468750
10 29296875
11 156250000
12 830078125
13 4394531250
14 23193359375
15 122070312500
16 640869140625
17 3356933593750
18 17547607421875
19 91552734375000
20 476837158203125