# A167016 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 70
5 755
6 10166
7 161350
8 2917524
9 58811631
10 1302452122
11 31362843270
12 814897356483
13 22712570157056
14 675859219349848
15 21387996239065027
16 717377276724961024
17 25427514619872897327
18 949918395837579798600