# A109777 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 15
4 101
5 829
6 7891
7 84735
8 1009065
9 13170841
10 186798003
11 2859068831
12 46960097413
13 823787983021
14 15370572776091
15 303929827526887
16 6348320745774993
17 139663855708967665
18 3227812335094695171
19 78180132507785056399
20 1980181972528939129861
21 52344600987011191983613