# A118266 (b-file synthesized from sequence entry)
0 1
1 0
2 10
3 40
4 205
5 1024
6 5120
7 25600
8 128000
9 640000
10 3200000
11 16000000
12 80000000
13 400000000
14 2000000000
15 10000000000
16 50000000000
17 250000000000
18 1250000000000
19 6250000000000
20 31250000000000
21 156250000000000