# A097114 (b-file synthesized from sequence entry)
0 1
1 8
2 57
3 400
4 3193
5 20000
6 176457
7 1000000
8 9646393
9 50000000
10 522673257
11 2500000000
12 28110989593
13 125000000000
14 1502438490057
15 6250000000000
16 79869486012793
17 312500000000000
18 4226104814626857
19 15625000000000000