# A163189 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 14
5 40
6 159
7 812
8 5133
9 42942
10 474619
11 6708142
12 121367878
13 2819170132
14 83571532538
15 3148951107867
16 151069353323782
17 9219463980803329
18 714951048370178409
19 70448496563603216429
20 8818161368662624534857